Removed two temporary backup files.
This commit is contained in:
Tim Edwards
parent
e42508b5eb
commit
00556d2999
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@ -1,804 +0,0 @@
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/* grTOGL3.c -
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*
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* Copyright 2003 Open Circuit Design, Inc., for MultiGiG Ltd.
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*
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* This file contains additional functions to manipulate an X window system
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* color display. Included here are device-dependent routines to draw and
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* erase text and draw a grid.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include <GL/gl.h>
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#include <GL/glx.h>
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#include <GL/glu.h>
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#include "tcltk/tclmagic.h"
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#include "utils/magic.h"
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#include "utils/geometry.h"
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#include "utils/malloc.h"
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#include "windows/windows.h"
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#include "graphics/graphics.h"
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#include "graphics/graphicsInt.h"
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#include "dbwind/dbwind.h"
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#include "textio/textio.h"
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#include "utils/signals.h"
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#include "utils/utils.h"
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#include "utils/hash.h"
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#include "graphics/grTOGLInt.h"
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#include "graphics/grTkCommon.h"
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#include "database/fonts.h"
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extern Display *grXdpy;
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/* locals */
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GLuint grXBases[4];
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/*---------------------------------------------------------
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* grtoglDrawGrid:
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* grxDrawGrid adds a grid to the grid layer, using the current
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* write mask and color.
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*
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* Results:
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* TRUE is returned normally. However, if the grid gets too small
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* to be useful, then nothing is drawn and FALSE is returned.
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*
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* Side Effects: None.
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*---------------------------------------------------------
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*/
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bool
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grtoglDrawGrid (prect, outline, clip)
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Rect *prect; /* A rectangle that forms the template
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* for the grid. Note: in order to maintain
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* precision for the grid, the rectangle
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* coordinates are specified in units of
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* screen coordinates multiplied by SUBPIXEL.
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*/
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int outline; /* the outline style */
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Rect *clip; /* a clipping rectangle */
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{
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int xsize, ysize;
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int x, y;
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int xstart, ystart;
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int snum, low, hi, shifted;
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xsize = prect->r_xtop - prect->r_xbot;
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ysize = prect->r_ytop - prect->r_ybot;
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if (!xsize || !ysize || GRID_TOO_SMALL(xsize, ysize))
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return FALSE;
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xstart = prect->r_xbot % xsize;
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while (xstart < clip->r_xbot << SUBPIXELBITS) xstart += xsize;
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ystart = prect->r_ybot % ysize;
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while (ystart < clip->r_ybot << SUBPIXELBITS) ystart += ysize;
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grtoglSetLineStyle(outline);
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glBegin(GL_LINES);
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snum = 0;
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low = clip->r_ybot;
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hi = clip->r_ytop;
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for (x = xstart; x < (clip->r_xtop+1) << SUBPIXELBITS; x += xsize)
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{
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shifted = x >> SUBPIXELBITS;
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glVertex2i(shifted, low);
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glVertex2i(shifted, hi);
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snum++;
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}
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snum = 0;
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low = clip->r_xbot;
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hi = clip->r_xtop;
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for (y = ystart; y < (clip->r_ytop+1) << SUBPIXELBITS; y += ysize)
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{
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shifted = y >> SUBPIXELBITS;
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glVertex2i(low, shifted);
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glVertex2i(hi, shifted);
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snum++;
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}
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glEnd();
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return TRUE;
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}
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/*---------------------------------------------------------
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* grtoglLoadFont
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* This local routine transfers the X font bitmaps
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* into OpenGL display lists for simple text
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* rendering.
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*
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* Results: Success/Failure
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*
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* Side Effects: None.
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*---------------------------------------------------------
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*/
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bool
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grtoglLoadFont()
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{
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Font id;
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unsigned int i;
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for (i = 0; i < 4; i++) {
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id = Tk_FontId(grTkFonts[i]);
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grXBases[i] = glGenLists(256);
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if (grXBases[i] == 0) {
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TxError("Out of display lists!\n");
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return FALSE;
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}
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glXUseXFont(id, 0, 256, grXBases[i]);
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}
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return TRUE;
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}
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/*---------------------------------------------------------
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* grtoglSetCharSize:
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* This local routine sets the character size in the display,
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* if necessary.
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*
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* Results: None.
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*
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* Side Effects: None.
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*---------------------------------------------------------
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*/
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void
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grtoglSetCharSize (size)
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int size; /* Width of characters, in pixels (6 or 8). */
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{
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toglCurrent.fontSize = size;
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switch (size)
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{
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case GR_TEXT_DEFAULT:
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case GR_TEXT_SMALL:
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toglCurrent.font = grSmallFont;
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break;
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case GR_TEXT_MEDIUM:
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toglCurrent.font = grMediumFont;
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break;
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case GR_TEXT_LARGE:
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toglCurrent.font = grLargeFont;
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break;
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case GR_TEXT_XLARGE:
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toglCurrent.font = grXLargeFont;
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break;
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default:
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TxError("%s%d\n", "grtoglSetCharSize: Unknown character size ",
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size );
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break;
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}
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}
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/*
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* ----------------------------------------------------------------------------
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* GrTOGLTextSize --
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*
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* Determine the size of a text string.
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*
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* Results:
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* None.
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*
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* Side effects:
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* A rectangle is filled in that is the size of the text in pixels.
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* The origin (0, 0) of this rectangle is located on the baseline
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* at the far left side of the string.
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* ----------------------------------------------------------------------------
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*/
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void
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GrTOGLTextSize(text, size, r)
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char *text;
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int size;
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Rect *r;
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{
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Tk_FontMetrics overall;
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Tk_Font font;
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int width;
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switch (size) {
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case GR_TEXT_DEFAULT:
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case GR_TEXT_SMALL:
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font = grSmallFont;
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break;
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case GR_TEXT_MEDIUM:
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font = grMediumFont;
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break;
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case GR_TEXT_LARGE:
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font = grLargeFont;
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break;
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case GR_TEXT_XLARGE:
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font = grXLargeFont;
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break;
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default:
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TxError("%s%d\n", "GrTOGLTextSize: Unknown character size ",
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size );
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break;
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}
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if (font == NULL) return;
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Tk_GetFontMetrics(font, &overall);
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width = Tk_TextWidth(font, text, strlen(text));
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/* Hack alert! Tk_TextWidth returns values too small! */
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width = width + (width >> 4);
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r->r_ytop = overall.ascent;
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r->r_ybot = -overall.descent;
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r->r_xtop = width;
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r->r_xbot = 0;
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}
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static GLuint FramebufferName = 0;
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/* OpenGL backing store functions (now removed from the X11-based ones) */
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/* Since we always paint into the front buffer, the back buffer is */
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/* always available for backing store. We need not create or destroy */
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/* it. We just use the w_backingStore location to store whether the */
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/* backing store contains valid data or not. */
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void
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grtoglFreeBackingStore(MagWindow *window)
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{
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GLuint RenderbufferName;
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RenderbufferName = (GLuint)window->w_backingStore;
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glDeleteRenderbuffers(1, &RenderbufferName);
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window->w_backingStore = (ClientData)0;
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}
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void
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grtoglCreateBackingStore(MagWindow *w)
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{
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GLuint RenderbufferName;
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Tk_Window tkwind = (Tk_Window)w->w_grdata;
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unsigned int width, height;
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/* ignore all windows other than layout */
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if (w->w_client != DBWclientID) return;
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/* Deferred */
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if (tkwind == NULL) return;
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width = w->w_screenArea.r_xtop - w->w_screenArea.r_xbot;
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height = w->w_screenArea.r_ytop - w->w_screenArea.r_ybot;
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/* Do this only once */
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if (FramebufferName == 0) {
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glGenFramebuffers(1, &FramebufferName);
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}
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RenderbufferName = (GLuint)(w->w_backingStore);
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if (RenderbufferName != 0) {
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glDeleteRenderbuffers(1, &RenderbufferName);
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}
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glGenRenderbuffers(1, &RenderbufferName);
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TxPrintf("create: Renderbuffer is %d\n", RenderbufferName);
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glBindRenderbuffer(GL_RENDERBUFFER, RenderbufferName);
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glRenderbufferStorage(GL_RENDERBUFFER, GL_RGB, width, height);
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w->w_backingStore = (ClientData)RenderbufferName;
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}
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bool
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grtoglGetBackingStore(MagWindow *w, Rect *area)
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{
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GLuint RenderbufferName;
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unsigned int width, height;
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int xbot, ybot;
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Rect r;
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// GLboolean result;
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// GLint rasterpos[4];
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if (w->w_backingStore == (ClientData)0) return FALSE;
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GEO_EXPAND(area, 1, &r);
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GeoClip(&r, &(w->w_screenArea));
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width = r.r_xtop - r.r_xbot;
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height = r.r_ytop - r.r_ybot;
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xbot = r.r_xbot;
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ybot = r.r_ybot;
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glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferName);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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RenderbufferName = (GLuint)w->w_backingStore;
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TxPrintf("get: Renderbuffer is %d\n", RenderbufferName);
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glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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GL_RENDERBUFFER, RenderbufferName);
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glDrawBuffer(GL_FRONT);
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glReadBuffer(GL_COLOR_ATTACHMENT0);
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// glDrawBuffer(GL_FRONT);
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// glReadBuffer(GL_BACK);
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// glRasterPos2i((GLint)xbot, (GLint)ybot);
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/* Check for valid raster position */
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// glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID, (GLboolean *)(&result));
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// glGetIntegerv(GL_CURRENT_RASTER_POSITION, (GLint *)(&rasterpos[0]));
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// TxPrintf("Raster valid = %d, position = %d %d %d %d\n",
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// (int)result, (int)rasterpos[0], (int)rasterpos[1],
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// (int)rasterpos[2], (int)rasterpos[3]);
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// if (result == 0)
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// TxPrintf("Intended position = %d %d\n", xbot, ybot);
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// glDisable(GL_BLEND);
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// glCopyPixels(xbot, ybot, width, height, GL_COLOR);
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glBlitFramebuffer(r.r_xbot, r.r_ybot, r.r_xtop, r.r_ytop,
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r.r_xbot, r.r_ybot, r.r_xtop, r.r_ytop,
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GL_COLOR_BUFFER_BIT, GL_LINEAR);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
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return TRUE;
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}
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bool
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grtoglScrollBackingStore(MagWindow *w, Point *shift)
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{
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GLuint RenderbufferName;
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unsigned int width, height;
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int xorigin, yorigin, xshift, yshift;
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if (w->w_backingStore == (ClientData)0)
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{
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TxPrintf("grtoglScrollBackingStore %d %d failure\n",
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shift->p_x, shift->p_y);
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return FALSE;
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}
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width = w->w_screenArea.r_xtop - w->w_screenArea.r_xbot;
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height = w->w_screenArea.r_ytop - w->w_screenArea.r_ybot;
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xorigin = 0;
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yorigin = 0;
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xshift = shift->p_x;
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yshift = shift->p_y;
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if (xshift > 0)
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width -= xshift;
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else if (xshift < 0)
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{
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width += xshift;
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xorigin = -xshift;
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xshift = 0;
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}
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if (yshift > 0)
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height -= yshift;
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else if (yshift < 0)
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{
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height += yshift;
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yorigin = -yshift;
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yshift = 0;
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}
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glBindFramebuffer(GL_READ_FRAMEBUFFER, FramebufferName);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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RenderbufferName = (GLuint)w->w_backingStore;
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TxPrintf("scroll: Renderbuffer is %d\n", RenderbufferName);
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glFramebufferRenderbuffer(GL_READ_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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GL_RENDERBUFFER, RenderbufferName);
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// glDrawBuffer(GL_BACK);
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// glReadBuffer(GL_BACK);
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// glRasterPos2i((GLint)xshift, (GLint)yshift);
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// glDisable(GL_BLEND);
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// glCopyPixels(xorigin, yorigin, width, height, GL_COLOR);
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glBlitFramebuffer(xorigin, yorigin, xorigin + width, yorigin + height,
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xshift, yshift, xshift + width, yshift + height,
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GL_COLOR_BUFFER_BIT, GL_LINEAR);
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glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
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/*
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferName);
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glBlitFramebuffer(xshift, yshift, xshift + width, yshift + height,
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xshift, yshift, xshift + width, yshift + height,
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GL_COLOR_BUFFER_BIT, GL_LINEAR);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
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*/
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// glDrawBuffer(GL_FRONT);
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return TRUE;
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}
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void
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grtoglPutBackingStore(MagWindow *w, Rect *area)
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{
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GLuint RenderbufferName;
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unsigned int width, height;
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int ybot, xbot;
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Rect r;
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// GLboolean result;
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// GLint rasterpos[4];
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if (w->w_backingStore == (ClientData)0) return;
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GEO_EXPAND(area, 1, &r);
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GeoClip(&r, &(w->w_screenArea));
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/*
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width = area->r_xtop - area->r_xbot;
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height = area->r_ytop - area->r_ybot;
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ybot = area->r_ybot;
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xbot = area->r_xbot;
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*/
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width = r.r_xtop - r.r_xbot;
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height = r.r_ytop - r.r_ybot;
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ybot = r.r_ybot;
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xbot = r.r_xbot;
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/*
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if (xbot < 0) {
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width -= xbot;
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xbot = 0;
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}
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if (ybot < 0) {
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height -= ybot;
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ybot = 0;
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}
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*/
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glBindFramebuffer(GL_READ_FRAMEBUFFER, 0);
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glBindFramebuffer(GL_DRAW_FRAMEBUFFER, FramebufferName);
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RenderbufferName = (GLuint)w->w_backingStore;
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TxPrintf("put: Renderbuffer is %d\n", RenderbufferName);
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glFramebufferRenderbuffer(GL_DRAW_FRAMEBUFFER, GL_COLOR_ATTACHMENT0,
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GL_RENDERBUFFER, RenderbufferName);
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glDrawBuffer(GL_COLOR_ATTACHMENT0);
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glReadBuffer(GL_FRONT);
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// glReadBuffer(GL_FRONT);
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// glDrawBuffer(GL_BACK);
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// glRasterPos2i((GLint)xbot, (GLint)ybot);
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/* Check for valid raster position */
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// glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID, (GLboolean *)(&result));
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// glGetIntegerv(GL_CURRENT_RASTER_POSITION, (GLint *)(&rasterpos[0]));
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// TxPrintf("Raster valid = %d, position = %d %d %d %d\n",
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// (int)result, (int)rasterpos[0], (int)rasterpos[1],
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// (int)rasterpos[2], (int)rasterpos[3]);
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// if (result == 0)
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// TxPrintf("Intended position = %d %d\n", xbot, ybot);
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/* This area may need to be expanded by a pixel and/or */
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/* expanded by GrPixelCorrect to compensate for the OpenGL */
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/* coordinate system. */
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// glDisable(GL_BLEND);
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// glCopyPixels(xbot, ybot, width, height, GL_COLOR);
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glBlitFramebuffer(r.r_xbot, r.r_ybot, r.r_xtop, r.r_ytop,
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r.r_xbot, r.r_ybot, r.r_xtop, r.r_ytop,
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GL_COLOR_BUFFER_BIT, GL_LINEAR);
|
||||
glBindFramebuffer(GL_DRAW_FRAMEBUFFER, 0);
|
||||
|
||||
// glDrawBuffer(GL_FRONT); /* Return to normal front rendering */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ----------------------------------------------------------------------------
|
||||
* GrTOGLReadPixel --
|
||||
*
|
||||
* Read one pixel from the screen.
|
||||
*
|
||||
* Results:
|
||||
* An integer containing the pixel's color.
|
||||
*
|
||||
* Side effects:
|
||||
* none.
|
||||
*
|
||||
* ----------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
int
|
||||
GrTOGLReadPixel (w, x, y)
|
||||
MagWindow *w;
|
||||
int x,y; /* the location of a pixel in screen coords */
|
||||
{
|
||||
return 0; /* OpenGL has no such function, so return 0 */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ----------------------------------------------------------------------------
|
||||
* GrTOGLBitBlt --
|
||||
*
|
||||
* Copy information in bit block transfers.
|
||||
*
|
||||
* Results:
|
||||
* None.
|
||||
*
|
||||
* Side effects:
|
||||
* changes the screen.
|
||||
* ----------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
GrTOGLBitBlt(r, p)
|
||||
Rect *r;
|
||||
Point *p;
|
||||
{
|
||||
glCopyPixels(r->r_xbot, r->r_ybot, r->r_xtop - r->r_xbot + 1,
|
||||
r->r_ytop - r->r_ybot + 1, GL_COLOR);
|
||||
}
|
||||
|
||||
#ifdef VECTOR_FONTS
|
||||
|
||||
/*
|
||||
*----------------------------------------------------------------------
|
||||
*
|
||||
* Technically, there should be no self-intersecting polygons in outline
|
||||
* fonts. However, decomposition of bezier curves into line segments
|
||||
* may occasionally produce one, so it needs to be handled.
|
||||
*----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
myCombine(GLdouble coords[3], GLdouble *vertex_data[4],
|
||||
GLfloat weight[4], GLdouble **outData, void *dataptr)
|
||||
{
|
||||
/* This needs to be free'd at the end of gluTessEndPolygon()! */
|
||||
GLdouble *new = (GLdouble *)mallocMagic(2 * sizeof(GLdouble));
|
||||
new[0] = coords[0];
|
||||
new[1] = coords[1];
|
||||
*outData = new;
|
||||
/* Diagnostic */
|
||||
TxError("Intersecting polygon in char \"%c\" at %g %g!\n",
|
||||
*((char *)dataptr), coords[0], coords[1]);
|
||||
}
|
||||
|
||||
/*
|
||||
*----------------------------------------------------------------------
|
||||
* Draw a text character
|
||||
* This routine differs from grtoglFillPolygon() in that it uses the
|
||||
* glu library to handle non-convex polygons as may appear in font
|
||||
* outlines.
|
||||
*----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglDrawCharacter(clist, tc, pixsize)
|
||||
FontChar *clist;
|
||||
unsigned char tc;
|
||||
int pixsize;
|
||||
{
|
||||
Point *tp;
|
||||
int np, nptotal;
|
||||
int i, j;
|
||||
static GLUtesselator *tess = NULL;
|
||||
static GLdouble *v = NULL;
|
||||
static int maxnp = 0;
|
||||
FontChar *ccur;
|
||||
|
||||
if (pixsize < 5) return; /* Label too small to be useful */
|
||||
|
||||
if (tess == NULL)
|
||||
{
|
||||
tess = gluNewTess();
|
||||
gluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)glBegin);
|
||||
gluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)glVertex3dv);
|
||||
gluTessCallback(tess, GLU_TESS_END, (_GLUfuncptr)glEnd);
|
||||
gluTessCallback(tess, GLU_TESS_COMBINE_DATA, (_GLUfuncptr)myCombine);
|
||||
}
|
||||
// Boundary-only does not look particularly good. . .
|
||||
gluTessProperty(tess, GLU_TESS_BOUNDARY_ONLY, GL_FALSE);
|
||||
|
||||
nptotal = 0;
|
||||
for (ccur = clist; ccur != NULL; ccur = ccur->fc_next)
|
||||
nptotal += ccur->fc_numpoints;
|
||||
|
||||
if (nptotal > maxnp)
|
||||
{
|
||||
if (v != NULL) freeMagic((char *)v);
|
||||
maxnp = nptotal;
|
||||
v = (GLdouble *)mallocMagic(nptotal * 3 * sizeof(GLdouble));
|
||||
}
|
||||
|
||||
j = 0;
|
||||
for (ccur = clist; ccur != NULL; ccur = ccur->fc_next)
|
||||
{
|
||||
tp = ccur->fc_points;
|
||||
np = ccur->fc_numpoints;
|
||||
|
||||
for (i = 0; i < np; i++, j += 3) {
|
||||
v[j] = tp[i].p_x;
|
||||
v[j + 1] = tp[i].p_y;
|
||||
v[j + 2] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
gluTessBeginPolygon(tess, (GLvoid *)(&tc));
|
||||
j = 0;
|
||||
for (ccur = clist; ccur != NULL; ccur = ccur->fc_next)
|
||||
{
|
||||
np = ccur->fc_numpoints;
|
||||
gluTessBeginContour(tess);
|
||||
for (i = 0; i < np; i++, j += 3) {
|
||||
gluTessVertex(tess, &v[j], &v[j]);
|
||||
}
|
||||
gluTessEndContour(tess);
|
||||
}
|
||||
gluTessEndPolygon(tess);
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglFontText:
|
||||
*
|
||||
* This routine draws text from font vectors using the
|
||||
* font vector routines in DBlabel.c. Text is clipped
|
||||
* to the clipping rectangle.
|
||||
*
|
||||
* For speed, we should be transferring the font
|
||||
* vectors into OpenGL display lists!
|
||||
*
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglFontText(text, font, size, rotate, pos, clip, obscure)
|
||||
char *text; /* The text to be drawn */
|
||||
int font; /* Font to use from fontList */
|
||||
int size; /* Pixel size of the font */
|
||||
int rotate; /* Text rotation */
|
||||
Point *pos; /* Text base position */
|
||||
Rect *clip; /* Clipping area */
|
||||
LinkedRect *obscure; /* List of obscuring areas */
|
||||
{
|
||||
char *tptr;
|
||||
Point *coffset; /* vector to next character */
|
||||
Rect *cbbox;
|
||||
GLfloat fsize, matvals[16];
|
||||
FontChar *clist;
|
||||
int cheight, baseline;
|
||||
float tmp;
|
||||
|
||||
/* Keep it simple for now---ignore clip and obscure */
|
||||
|
||||
glDisable(GL_BLEND);
|
||||
glPushMatrix();
|
||||
glTranslated(pos->p_x, pos->p_y, 0);
|
||||
glRotated(rotate, 0, 0, 1);
|
||||
|
||||
/* Get label size */
|
||||
cbbox = &DBFontList[font]->mf_extents;
|
||||
|
||||
fsize = (GLfloat)size / (GLfloat)cbbox->r_ytop;
|
||||
glScalef(fsize, fsize, 1.0);
|
||||
|
||||
/* Adjust to baseline */
|
||||
baseline = 0;
|
||||
for (tptr = text; *tptr != '\0'; tptr++)
|
||||
{
|
||||
DBFontChar(font, *tptr, NULL, NULL, &cbbox);
|
||||
if (cbbox->r_ybot < baseline)
|
||||
baseline = cbbox->r_ybot;
|
||||
}
|
||||
glTranslated(0, -baseline, 0);
|
||||
|
||||
for (tptr = text; *tptr != '\0'; tptr++)
|
||||
{
|
||||
DBFontChar(font, *tptr, &clist, &coffset, NULL);
|
||||
grtoglDrawCharacter(clist, *tptr, size);
|
||||
glTranslated(coffset->p_x, coffset->p_y, 0);
|
||||
}
|
||||
glPopMatrix();
|
||||
}
|
||||
|
||||
#endif /* VECTOR_FONTS */
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglPutText:
|
||||
* (modified on SunPutText)
|
||||
*
|
||||
* This routine puts a chunk of text on the screen in the current
|
||||
* color, size, etc. The caller must ensure that it fits on
|
||||
* the screen -- no clipping is done except to the obscuring rectangle
|
||||
* list and the clip rectangle.
|
||||
*
|
||||
* Results:
|
||||
* none.
|
||||
*
|
||||
* Side Effects:
|
||||
* The text is drawn on the screen.
|
||||
*
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglPutText (text, pos, clip, obscure)
|
||||
char *text; /* The text to be drawn. */
|
||||
Point *pos; /* A point located at the leftmost point of
|
||||
* the baseline for this string.
|
||||
*/
|
||||
Rect *clip; /* A rectangle to clip against */
|
||||
LinkedRect *obscure; /* A list of obscuring rectangles */
|
||||
|
||||
{
|
||||
Rect location;
|
||||
Rect overlap;
|
||||
Rect textrect;
|
||||
LinkedRect *ob;
|
||||
void grTOGLGeoSub();
|
||||
int i;
|
||||
float tscale;
|
||||
|
||||
GrTOGLTextSize(text, toglCurrent.fontSize, &textrect);
|
||||
|
||||
location.r_xbot = pos->p_x + textrect.r_xbot;
|
||||
location.r_xtop = pos->p_x + textrect.r_xtop;
|
||||
location.r_ybot = pos->p_y + textrect.r_ybot;
|
||||
location.r_ytop = pos->p_y + textrect.r_ytop;
|
||||
|
||||
/* erase parts of the bitmap that are obscured */
|
||||
for (ob = obscure; ob != NULL; ob = ob->r_next)
|
||||
{
|
||||
if (GEO_TOUCH(&ob->r_r, &location))
|
||||
{
|
||||
overlap = location;
|
||||
GeoClip(&overlap, &ob->r_r);
|
||||
grTOGLGeoSub(&location, &overlap);
|
||||
}
|
||||
}
|
||||
|
||||
overlap = location;
|
||||
GeoClip(&overlap, clip);
|
||||
|
||||
/* copy the text to the color screen */
|
||||
if ((overlap.r_xbot < overlap.r_xtop)&&(overlap.r_ybot <= overlap.r_ytop))
|
||||
{
|
||||
glScissor(overlap.r_xbot, overlap.r_ybot, overlap.r_xtop - overlap.r_xbot,
|
||||
overlap.r_ytop - overlap.r_ybot);
|
||||
glEnable(GL_SCISSOR_TEST);
|
||||
glDisable(GL_BLEND);
|
||||
glRasterPos2i(pos->p_x, pos->p_y);
|
||||
glListBase(grXBases[(toglCurrent.fontSize == GR_TEXT_DEFAULT) ?
|
||||
GR_TEXT_SMALL : toglCurrent.fontSize]);
|
||||
glCallLists(strlen(text), GL_UNSIGNED_BYTE, (unsigned char *)text);
|
||||
glDisable(GL_SCISSOR_TEST);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* grTOGLGeoSub:
|
||||
* return the tallest sub-rectangle of r not obscured by area
|
||||
* area must be within r.
|
||||
*/
|
||||
|
||||
void
|
||||
grTOGLGeoSub(r, area)
|
||||
Rect *r; /* Rectangle to be subtracted from. */
|
||||
Rect *area; /* Area to be subtracted. */
|
||||
|
||||
{
|
||||
if (r->r_xbot == area->r_xbot) r->r_xbot = area->r_xtop;
|
||||
else
|
||||
if (r->r_xtop == area->r_xtop) r->r_xtop = area->r_xbot;
|
||||
else
|
||||
if (r->r_ybot <= area->r_ybot) r->r_ybot = area->r_ytop;
|
||||
else
|
||||
if (r->r_ytop == area->r_ytop) r->r_ytop = area->r_ybot;
|
||||
else
|
||||
r->r_xtop = area->r_xbot;
|
||||
}
|
||||
|
|
@ -1,723 +0,0 @@
|
|||
/* grTOGL3.c -
|
||||
*
|
||||
* Copyright 2003 Open Circuit Design, Inc., for MultiGiG Ltd.
|
||||
*
|
||||
* This file contains additional functions to manipulate an X window system
|
||||
* color display. Included here are device-dependent routines to draw and
|
||||
* erase text and draw a grid.
|
||||
*
|
||||
*/
|
||||
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
|
||||
#include <GL/gl.h>
|
||||
#include <GL/glx.h>
|
||||
#include <GL/glu.h>
|
||||
|
||||
#include "tcltk/tclmagic.h"
|
||||
#include "utils/magic.h"
|
||||
#include "utils/geometry.h"
|
||||
#include "utils/malloc.h"
|
||||
#include "windows/windows.h"
|
||||
#include "graphics/graphics.h"
|
||||
#include "graphics/graphicsInt.h"
|
||||
#include "dbwind/dbwind.h"
|
||||
#include "textio/textio.h"
|
||||
#include "utils/signals.h"
|
||||
#include "utils/utils.h"
|
||||
#include "utils/hash.h"
|
||||
#include "graphics/grTOGLInt.h"
|
||||
#include "graphics/grTkCommon.h"
|
||||
#include "database/fonts.h"
|
||||
|
||||
extern Display *grXdpy;
|
||||
|
||||
/* locals */
|
||||
|
||||
GLuint grXBases[4];
|
||||
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglDrawGrid:
|
||||
* grxDrawGrid adds a grid to the grid layer, using the current
|
||||
* write mask and color.
|
||||
*
|
||||
* Results:
|
||||
* TRUE is returned normally. However, if the grid gets too small
|
||||
* to be useful, then nothing is drawn and FALSE is returned.
|
||||
*
|
||||
* Side Effects: None.
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
bool
|
||||
grtoglDrawGrid (prect, outline, clip)
|
||||
Rect *prect; /* A rectangle that forms the template
|
||||
* for the grid. Note: in order to maintain
|
||||
* precision for the grid, the rectangle
|
||||
* coordinates are specified in units of
|
||||
* screen coordinates multiplied by SUBPIXEL.
|
||||
*/
|
||||
int outline; /* the outline style */
|
||||
Rect *clip; /* a clipping rectangle */
|
||||
{
|
||||
int xsize, ysize;
|
||||
int x, y;
|
||||
int xstart, ystart;
|
||||
int snum, low, hi, shifted;
|
||||
|
||||
xsize = prect->r_xtop - prect->r_xbot;
|
||||
ysize = prect->r_ytop - prect->r_ybot;
|
||||
if (!xsize || !ysize || GRID_TOO_SMALL(xsize, ysize))
|
||||
return FALSE;
|
||||
|
||||
xstart = prect->r_xbot % xsize;
|
||||
while (xstart < clip->r_xbot << SUBPIXELBITS) xstart += xsize;
|
||||
ystart = prect->r_ybot % ysize;
|
||||
while (ystart < clip->r_ybot << SUBPIXELBITS) ystart += ysize;
|
||||
|
||||
grtoglSetLineStyle(outline);
|
||||
|
||||
glBegin(GL_LINES);
|
||||
|
||||
snum = 0;
|
||||
low = clip->r_ybot;
|
||||
hi = clip->r_ytop;
|
||||
for (x = xstart; x < (clip->r_xtop+1) << SUBPIXELBITS; x += xsize)
|
||||
{
|
||||
shifted = x >> SUBPIXELBITS;
|
||||
glVertex2i(shifted, low);
|
||||
glVertex2i(shifted, hi);
|
||||
snum++;
|
||||
}
|
||||
|
||||
snum = 0;
|
||||
low = clip->r_xbot;
|
||||
hi = clip->r_xtop;
|
||||
for (y = ystart; y < (clip->r_ytop+1) << SUBPIXELBITS; y += ysize)
|
||||
{
|
||||
shifted = y >> SUBPIXELBITS;
|
||||
glVertex2i(low, shifted);
|
||||
glVertex2i(hi, shifted);
|
||||
snum++;
|
||||
}
|
||||
glEnd();
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglLoadFont
|
||||
* This local routine transfers the X font bitmaps
|
||||
* into OpenGL display lists for simple text
|
||||
* rendering.
|
||||
*
|
||||
* Results: Success/Failure
|
||||
*
|
||||
* Side Effects: None.
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
bool
|
||||
grtoglLoadFont()
|
||||
{
|
||||
Font id;
|
||||
unsigned int i;
|
||||
|
||||
for (i = 0; i < 4; i++) {
|
||||
id = Tk_FontId(grTkFonts[i]);
|
||||
|
||||
grXBases[i] = glGenLists(256);
|
||||
if (grXBases[i] == 0) {
|
||||
TxError("Out of display lists!\n");
|
||||
return FALSE;
|
||||
}
|
||||
glXUseXFont(id, 0, 256, grXBases[i]);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglSetCharSize:
|
||||
* This local routine sets the character size in the display,
|
||||
* if necessary.
|
||||
*
|
||||
* Results: None.
|
||||
*
|
||||
* Side Effects: None.
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglSetCharSize (size)
|
||||
int size; /* Width of characters, in pixels (6 or 8). */
|
||||
{
|
||||
toglCurrent.fontSize = size;
|
||||
switch (size)
|
||||
{
|
||||
case GR_TEXT_DEFAULT:
|
||||
case GR_TEXT_SMALL:
|
||||
toglCurrent.font = grSmallFont;
|
||||
break;
|
||||
case GR_TEXT_MEDIUM:
|
||||
toglCurrent.font = grMediumFont;
|
||||
break;
|
||||
case GR_TEXT_LARGE:
|
||||
toglCurrent.font = grLargeFont;
|
||||
break;
|
||||
case GR_TEXT_XLARGE:
|
||||
toglCurrent.font = grXLargeFont;
|
||||
break;
|
||||
default:
|
||||
TxError("%s%d\n", "grtoglSetCharSize: Unknown character size ",
|
||||
size );
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ----------------------------------------------------------------------------
|
||||
* GrTOGLTextSize --
|
||||
*
|
||||
* Determine the size of a text string.
|
||||
*
|
||||
* Results:
|
||||
* None.
|
||||
*
|
||||
* Side effects:
|
||||
* A rectangle is filled in that is the size of the text in pixels.
|
||||
* The origin (0, 0) of this rectangle is located on the baseline
|
||||
* at the far left side of the string.
|
||||
* ----------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
GrTOGLTextSize(text, size, r)
|
||||
char *text;
|
||||
int size;
|
||||
Rect *r;
|
||||
{
|
||||
Tk_FontMetrics overall;
|
||||
Tk_Font font;
|
||||
int width;
|
||||
|
||||
switch (size) {
|
||||
case GR_TEXT_DEFAULT:
|
||||
case GR_TEXT_SMALL:
|
||||
font = grSmallFont;
|
||||
break;
|
||||
case GR_TEXT_MEDIUM:
|
||||
font = grMediumFont;
|
||||
break;
|
||||
case GR_TEXT_LARGE:
|
||||
font = grLargeFont;
|
||||
break;
|
||||
case GR_TEXT_XLARGE:
|
||||
font = grXLargeFont;
|
||||
break;
|
||||
default:
|
||||
TxError("%s%d\n", "GrTOGLTextSize: Unknown character size ",
|
||||
size );
|
||||
break;
|
||||
}
|
||||
if (font == NULL) return;
|
||||
Tk_GetFontMetrics(font, &overall);
|
||||
width = Tk_TextWidth(font, text, strlen(text));
|
||||
/* Hack alert! Tk_TextWidth returns values too small! */
|
||||
width = width + (width >> 4);
|
||||
r->r_ytop = overall.ascent;
|
||||
r->r_ybot = -overall.descent;
|
||||
r->r_xtop = width;
|
||||
r->r_xbot = 0;
|
||||
}
|
||||
|
||||
/* OpenGL backing store functions (now removed from the X11-based ones) */
|
||||
/* Since we always paint into the front buffer, the back buffer is */
|
||||
/* always available for backing store. We need not create or destroy */
|
||||
/* it. We just use the w_backingStore location to store whether the */
|
||||
/* backing store contains valid data or not. */
|
||||
|
||||
void
|
||||
grtoglFreeBackingStore(MagWindow *window)
|
||||
{
|
||||
window->w_backingStore = (ClientData)0;
|
||||
}
|
||||
|
||||
void
|
||||
grtoglCreateBackingStore(MagWindow *w)
|
||||
{
|
||||
Tk_Window tkwind = (Tk_Window)w->w_grdata;
|
||||
|
||||
/* ignore all windows other than layout */
|
||||
if (w->w_client != DBWclientID) return;
|
||||
|
||||
/* Deferred */
|
||||
if (tkwind == NULL) return;
|
||||
|
||||
w->w_backingStore = (ClientData)1;
|
||||
}
|
||||
|
||||
bool
|
||||
grtoglGetBackingStore(MagWindow *w, Rect *area)
|
||||
{
|
||||
unsigned int width, height;
|
||||
int xbot, ybot;
|
||||
Rect r;
|
||||
|
||||
// GLboolean result;
|
||||
// GLint rasterpos[4];
|
||||
|
||||
if (w->w_backingStore == (ClientData)0) return FALSE;
|
||||
|
||||
GEO_EXPAND(area, 1, &r);
|
||||
GeoClip(&r, &(w->w_screenArea));
|
||||
|
||||
width = r.r_xtop - r.r_xbot;
|
||||
height = r.r_ytop - r.r_ybot;
|
||||
|
||||
xbot = r.r_xbot;
|
||||
ybot = r.r_ybot;
|
||||
|
||||
glDrawBuffer(GL_FRONT);
|
||||
glReadBuffer(GL_BACK);
|
||||
glRasterPos2i((GLint)xbot, (GLint)ybot);
|
||||
|
||||
/* Check for valid raster position */
|
||||
// glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID, (GLboolean *)(&result));
|
||||
// glGetIntegerv(GL_CURRENT_RASTER_POSITION, (GLint *)(&rasterpos[0]));
|
||||
|
||||
// TxPrintf("Raster valid = %d, position = %d %d %d %d\n",
|
||||
// (int)result, (int)rasterpos[0], (int)rasterpos[1],
|
||||
// (int)rasterpos[2], (int)rasterpos[3]);
|
||||
// if (result == 0)
|
||||
// TxPrintf("Intended position = %d %d\n", xbot, ybot);
|
||||
|
||||
glDisable(GL_BLEND);
|
||||
glCopyPixels(xbot, ybot, width, height, GL_COLOR);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
|
||||
bool
|
||||
grtoglScrollBackingStore(MagWindow *w, Point *shift)
|
||||
{
|
||||
unsigned int width, height;
|
||||
int xorigin, yorigin, xshift, yshift;
|
||||
|
||||
if (w->w_backingStore == (ClientData)0)
|
||||
{
|
||||
TxPrintf("grtoglScrollBackingStore %d %d failure\n",
|
||||
shift->p_x, shift->p_y);
|
||||
return FALSE;
|
||||
}
|
||||
|
||||
width = w->w_screenArea.r_xtop - w->w_screenArea.r_xbot;
|
||||
height = w->w_screenArea.r_ytop - w->w_screenArea.r_ybot;
|
||||
xorigin = 0;
|
||||
yorigin = 0;
|
||||
xshift = shift->p_x;
|
||||
yshift = shift->p_y;
|
||||
|
||||
if (xshift > 0)
|
||||
width -= xshift;
|
||||
else if (xshift < 0)
|
||||
{
|
||||
width += xshift;
|
||||
xorigin = -xshift;
|
||||
xshift = 0;
|
||||
}
|
||||
if (yshift > 0)
|
||||
height -= yshift;
|
||||
else if (yshift < 0)
|
||||
{
|
||||
height += yshift;
|
||||
yorigin = -yshift;
|
||||
yshift = 0;
|
||||
}
|
||||
|
||||
glDrawBuffer(GL_BACK);
|
||||
glReadBuffer(GL_BACK);
|
||||
glRasterPos2i((GLint)xshift, (GLint)yshift);
|
||||
glDisable(GL_BLEND);
|
||||
glCopyPixels(xorigin, yorigin, width, height, GL_COLOR);
|
||||
|
||||
glDrawBuffer(GL_FRONT);
|
||||
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
void
|
||||
grtoglPutBackingStore(MagWindow *w, Rect *area)
|
||||
{
|
||||
unsigned int width, height;
|
||||
int ybot, xbot;
|
||||
Rect r;
|
||||
|
||||
// GLboolean result;
|
||||
// GLint rasterpos[4];
|
||||
|
||||
if (w->w_backingStore == (ClientData)0) return;
|
||||
|
||||
GEO_EXPAND(area, 1, &r);
|
||||
GeoClip(&r, &(w->w_screenArea));
|
||||
|
||||
/*
|
||||
width = area->r_xtop - area->r_xbot;
|
||||
height = area->r_ytop - area->r_ybot;
|
||||
|
||||
ybot = area->r_ybot;
|
||||
xbot = area->r_xbot;
|
||||
*/
|
||||
|
||||
width = r.r_xtop - r.r_xbot;
|
||||
height = r.r_ytop - r.r_ybot;
|
||||
ybot = r.r_ybot;
|
||||
xbot = r.r_xbot;
|
||||
|
||||
if (xbot < 0) {
|
||||
width -= xbot;
|
||||
xbot = 0;
|
||||
}
|
||||
|
||||
if (ybot < 0) {
|
||||
height -= ybot;
|
||||
ybot = 0;
|
||||
}
|
||||
|
||||
glReadBuffer(GL_FRONT);
|
||||
glDrawBuffer(GL_BACK);
|
||||
glRasterPos2i((GLint)xbot, (GLint)ybot);
|
||||
|
||||
/* Check for valid raster position */
|
||||
// glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID, (GLboolean *)(&result));
|
||||
// glGetIntegerv(GL_CURRENT_RASTER_POSITION, (GLint *)(&rasterpos[0]));
|
||||
|
||||
// TxPrintf("Raster valid = %d, position = %d %d %d %d\n",
|
||||
// (int)result, (int)rasterpos[0], (int)rasterpos[1],
|
||||
// (int)rasterpos[2], (int)rasterpos[3]);
|
||||
// if (result == 0)
|
||||
// TxPrintf("Intended position = %d %d\n", xbot, ybot);
|
||||
|
||||
/* This area may need to be expanded by a pixel and/or */
|
||||
/* expanded by GrPixelCorrect to compensate for the OpenGL */
|
||||
/* coordinate system. */
|
||||
|
||||
width--;
|
||||
height--;
|
||||
|
||||
glDisable(GL_BLEND);
|
||||
glCopyPixels(xbot, ybot, width, height, GL_COLOR);
|
||||
|
||||
glDrawBuffer(GL_FRONT); /* Return to normal front rendering */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ----------------------------------------------------------------------------
|
||||
* GrTOGLReadPixel --
|
||||
*
|
||||
* Read one pixel from the screen.
|
||||
*
|
||||
* Results:
|
||||
* An integer containing the pixel's color.
|
||||
*
|
||||
* Side effects:
|
||||
* none.
|
||||
*
|
||||
* ----------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
int
|
||||
GrTOGLReadPixel (w, x, y)
|
||||
MagWindow *w;
|
||||
int x,y; /* the location of a pixel in screen coords */
|
||||
{
|
||||
return 0; /* OpenGL has no such function, so return 0 */
|
||||
}
|
||||
|
||||
|
||||
/*
|
||||
* ----------------------------------------------------------------------------
|
||||
* GrTOGLBitBlt --
|
||||
*
|
||||
* Copy information in bit block transfers.
|
||||
*
|
||||
* Results:
|
||||
* None.
|
||||
*
|
||||
* Side effects:
|
||||
* changes the screen.
|
||||
* ----------------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
GrTOGLBitBlt(r, p)
|
||||
Rect *r;
|
||||
Point *p;
|
||||
{
|
||||
glCopyPixels(r->r_xbot, r->r_ybot, r->r_xtop - r->r_xbot + 1,
|
||||
r->r_ytop - r->r_ybot + 1, GL_COLOR);
|
||||
}
|
||||
|
||||
#ifdef VECTOR_FONTS
|
||||
|
||||
/*
|
||||
*----------------------------------------------------------------------
|
||||
*
|
||||
* Technically, there should be no self-intersecting polygons in outline
|
||||
* fonts. However, decomposition of bezier curves into line segments
|
||||
* may occasionally produce one, so it needs to be handled.
|
||||
*----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
myCombine(GLdouble coords[3], GLdouble *vertex_data[4],
|
||||
GLfloat weight[4], GLdouble **outData, void *dataptr)
|
||||
{
|
||||
/* This needs to be free'd at the end of gluTessEndPolygon()! */
|
||||
GLdouble *new = (GLdouble *)mallocMagic(2 * sizeof(GLdouble));
|
||||
new[0] = coords[0];
|
||||
new[1] = coords[1];
|
||||
*outData = new;
|
||||
/* Diagnostic */
|
||||
TxError("Intersecting polygon in char \"%c\" at %g %g!\n",
|
||||
*((char *)dataptr), coords[0], coords[1]);
|
||||
}
|
||||
|
||||
/*
|
||||
*----------------------------------------------------------------------
|
||||
* Draw a text character
|
||||
* This routine differs from grtoglFillPolygon() in that it uses the
|
||||
* glu library to handle non-convex polygons as may appear in font
|
||||
* outlines.
|
||||
*----------------------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglDrawCharacter(clist, tc, pixsize)
|
||||
FontChar *clist;
|
||||
unsigned char tc;
|
||||
int pixsize;
|
||||
{
|
||||
Point *tp;
|
||||
int np, nptotal;
|
||||
int i, j;
|
||||
static GLUtesselator *tess = NULL;
|
||||
static GLdouble *v = NULL;
|
||||
static int maxnp = 0;
|
||||
FontChar *ccur;
|
||||
|
||||
if (pixsize < 5) return; /* Label too small to be useful */
|
||||
|
||||
if (tess == NULL)
|
||||
{
|
||||
tess = gluNewTess();
|
||||
gluTessCallback(tess, GLU_TESS_BEGIN, (_GLUfuncptr)glBegin);
|
||||
gluTessCallback(tess, GLU_TESS_VERTEX, (_GLUfuncptr)glVertex3dv);
|
||||
gluTessCallback(tess, GLU_TESS_END, (_GLUfuncptr)glEnd);
|
||||
gluTessCallback(tess, GLU_TESS_COMBINE_DATA, (_GLUfuncptr)myCombine);
|
||||
}
|
||||
// Boundary-only does not look particularly good. . .
|
||||
gluTessProperty(tess, GLU_TESS_BOUNDARY_ONLY, GL_FALSE);
|
||||
|
||||
nptotal = 0;
|
||||
for (ccur = clist; ccur != NULL; ccur = ccur->fc_next)
|
||||
nptotal += ccur->fc_numpoints;
|
||||
|
||||
if (nptotal > maxnp)
|
||||
{
|
||||
if (v != NULL) freeMagic((char *)v);
|
||||
maxnp = nptotal;
|
||||
v = (GLdouble *)mallocMagic(nptotal * 3 * sizeof(GLdouble));
|
||||
}
|
||||
|
||||
j = 0;
|
||||
for (ccur = clist; ccur != NULL; ccur = ccur->fc_next)
|
||||
{
|
||||
tp = ccur->fc_points;
|
||||
np = ccur->fc_numpoints;
|
||||
|
||||
for (i = 0; i < np; i++, j += 3) {
|
||||
v[j] = tp[i].p_x;
|
||||
v[j + 1] = tp[i].p_y;
|
||||
v[j + 2] = 0;
|
||||
}
|
||||
}
|
||||
|
||||
gluTessBeginPolygon(tess, (GLvoid *)(&tc));
|
||||
j = 0;
|
||||
for (ccur = clist; ccur != NULL; ccur = ccur->fc_next)
|
||||
{
|
||||
np = ccur->fc_numpoints;
|
||||
gluTessBeginContour(tess);
|
||||
for (i = 0; i < np; i++, j += 3) {
|
||||
gluTessVertex(tess, &v[j], &v[j]);
|
||||
}
|
||||
gluTessEndContour(tess);
|
||||
}
|
||||
gluTessEndPolygon(tess);
|
||||
}
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglFontText:
|
||||
*
|
||||
* This routine draws text from font vectors using the
|
||||
* font vector routines in DBlabel.c. Text is clipped
|
||||
* to the clipping rectangle.
|
||||
*
|
||||
* For speed, we should be transferring the font
|
||||
* vectors into OpenGL display lists!
|
||||
*
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglFontText(text, font, size, rotate, pos, clip, obscure)
|
||||
char *text; /* The text to be drawn */
|
||||
int font; /* Font to use from fontList */
|
||||
int size; /* Pixel size of the font */
|
||||
int rotate; /* Text rotation */
|
||||
Point *pos; /* Text base position */
|
||||
Rect *clip; /* Clipping area */
|
||||
LinkedRect *obscure; /* List of obscuring areas */
|
||||
{
|
||||
char *tptr;
|
||||
Point *coffset; /* vector to next character */
|
||||
Rect *cbbox;
|
||||
GLfloat fsize, matvals[16];
|
||||
FontChar *clist;
|
||||
int cheight, baseline;
|
||||
float tmp;
|
||||
|
||||
/* Keep it simple for now---ignore clip and obscure */
|
||||
|
||||
glDisable(GL_BLEND);
|
||||
glPushMatrix();
|
||||
glTranslated(pos->p_x, pos->p_y, 0);
|
||||
glRotated(rotate, 0, 0, 1);
|
||||
|
||||
/* Get label size */
|
||||
cbbox = &DBFontList[font]->mf_extents;
|
||||
|
||||
fsize = (GLfloat)size / (GLfloat)cbbox->r_ytop;
|
||||
glScalef(fsize, fsize, 1.0);
|
||||
|
||||
/* Adjust to baseline */
|
||||
baseline = 0;
|
||||
for (tptr = text; *tptr != '\0'; tptr++)
|
||||
{
|
||||
DBFontChar(font, *tptr, NULL, NULL, &cbbox);
|
||||
if (cbbox->r_ybot < baseline)
|
||||
baseline = cbbox->r_ybot;
|
||||
}
|
||||
glTranslated(0, -baseline, 0);
|
||||
|
||||
for (tptr = text; *tptr != '\0'; tptr++)
|
||||
{
|
||||
DBFontChar(font, *tptr, &clist, &coffset, NULL);
|
||||
grtoglDrawCharacter(clist, *tptr, size);
|
||||
glTranslated(coffset->p_x, coffset->p_y, 0);
|
||||
}
|
||||
glPopMatrix();
|
||||
}
|
||||
|
||||
#endif /* VECTOR_FONTS */
|
||||
|
||||
/*---------------------------------------------------------
|
||||
* grtoglPutText:
|
||||
* (modified on SunPutText)
|
||||
*
|
||||
* This routine puts a chunk of text on the screen in the current
|
||||
* color, size, etc. The caller must ensure that it fits on
|
||||
* the screen -- no clipping is done except to the obscuring rectangle
|
||||
* list and the clip rectangle.
|
||||
*
|
||||
* Results:
|
||||
* none.
|
||||
*
|
||||
* Side Effects:
|
||||
* The text is drawn on the screen.
|
||||
*
|
||||
*---------------------------------------------------------
|
||||
*/
|
||||
|
||||
void
|
||||
grtoglPutText (text, pos, clip, obscure)
|
||||
char *text; /* The text to be drawn. */
|
||||
Point *pos; /* A point located at the leftmost point of
|
||||
* the baseline for this string.
|
||||
*/
|
||||
Rect *clip; /* A rectangle to clip against */
|
||||
LinkedRect *obscure; /* A list of obscuring rectangles */
|
||||
|
||||
{
|
||||
Rect location;
|
||||
Rect overlap;
|
||||
Rect textrect;
|
||||
LinkedRect *ob;
|
||||
void grTOGLGeoSub();
|
||||
int i;
|
||||
float tscale;
|
||||
|
||||
GrTOGLTextSize(text, toglCurrent.fontSize, &textrect);
|
||||
|
||||
location.r_xbot = pos->p_x + textrect.r_xbot;
|
||||
location.r_xtop = pos->p_x + textrect.r_xtop;
|
||||
location.r_ybot = pos->p_y + textrect.r_ybot;
|
||||
location.r_ytop = pos->p_y + textrect.r_ytop;
|
||||
|
||||
/* erase parts of the bitmap that are obscured */
|
||||
for (ob = obscure; ob != NULL; ob = ob->r_next)
|
||||
{
|
||||
if (GEO_TOUCH(&ob->r_r, &location))
|
||||
{
|
||||
overlap = location;
|
||||
GeoClip(&overlap, &ob->r_r);
|
||||
grTOGLGeoSub(&location, &overlap);
|
||||
}
|
||||
}
|
||||
|
||||
overlap = location;
|
||||
GeoClip(&overlap, clip);
|
||||
|
||||
/* copy the text to the color screen */
|
||||
if ((overlap.r_xbot < overlap.r_xtop)&&(overlap.r_ybot <= overlap.r_ytop))
|
||||
{
|
||||
glScissor(overlap.r_xbot, overlap.r_ybot, overlap.r_xtop - overlap.r_xbot,
|
||||
overlap.r_ytop - overlap.r_ybot);
|
||||
glEnable(GL_SCISSOR_TEST);
|
||||
glDisable(GL_BLEND);
|
||||
glRasterPos2i(pos->p_x, pos->p_y);
|
||||
glListBase(grXBases[(toglCurrent.fontSize == GR_TEXT_DEFAULT) ?
|
||||
GR_TEXT_SMALL : toglCurrent.fontSize]);
|
||||
glCallLists(strlen(text), GL_UNSIGNED_BYTE, (unsigned char *)text);
|
||||
glDisable(GL_SCISSOR_TEST);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
/* grTOGLGeoSub:
|
||||
* return the tallest sub-rectangle of r not obscured by area
|
||||
* area must be within r.
|
||||
*/
|
||||
|
||||
void
|
||||
grTOGLGeoSub(r, area)
|
||||
Rect *r; /* Rectangle to be subtracted from. */
|
||||
Rect *area; /* Area to be subtracted. */
|
||||
|
||||
{
|
||||
if (r->r_xbot == area->r_xbot) r->r_xbot = area->r_xtop;
|
||||
else
|
||||
if (r->r_xtop == area->r_xtop) r->r_xtop = area->r_xbot;
|
||||
else
|
||||
if (r->r_ybot <= area->r_ybot) r->r_ybot = area->r_ytop;
|
||||
else
|
||||
if (r->r_ytop == area->r_ytop) r->r_ytop = area->r_ybot;
|
||||
else
|
||||
r->r_xtop = area->r_xbot;
|
||||
}
|
||||
Loading…
Reference in New Issue