diff options
Diffstat (limited to 'src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_rect.cxx')
| -rw-r--r-- | src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_rect.cxx | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_rect.cxx b/src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_rect.cxx new file mode 100644 index 000000000..1ea30a4d7 --- /dev/null +++ b/src/drivers/OpenGL/Fl_OpenGL_Graphics_Driver_rect.cxx @@ -0,0 +1,209 @@ +// +// "$Id$" +// +// Rectangle drawing routines for the Fast Light Tool Kit (FLTK). +// +// Copyright 1998-2016 by Bill Spitzak and others. +// +// This library is free software. Distribution and use rights are outlined in +// the file "COPYING" which should have been included with this file. If this +// file is missing or damaged, see the license at: +// +// http://www.fltk.org/COPYING.php +// +// Please report all bugs and problems on the following page: +// +// http://www.fltk.org/str.php +// + +#ifndef FL_CFG_GFX_OPENGL_RECT_CXX +#define FL_CFG_GFX_OPENGL_RECT_CXX + + +/** + \file quartz_rect.cxx + \brief OpenGL specific line and polygon drawing with integer coordinates. + */ + +#include <FL/gl.h> +#include "Fl_OpenGL_Graphics_Driver.h" + +// --- line and polygon drawing with integer coordinates + +void Fl_OpenGL_Graphics_Driver::point(int x, int y) { + glBegin(GL_POINTS); + glVertex2i(x, y); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::rect(int x, int y, int w, int h) { + glBegin(GL_LINE_LOOP); + glVertex2i(x, y); + glVertex2i(x+w, y); + glVertex2i(x+w, y+h); + glVertex2i(x, y+h); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::rectf(int x, int y, int w, int h) { + if (w<=0 || h<=0) return; + // OpenGL has the natural origin at the bottom left. Drawing in FLTK + // coordinates requires that we shift the rectangle one pixel up. + glBegin(GL_POLYGON); + glVertex2i(x, y-1); + glVertex2i(x+w, y-1); + glVertex2i(x+w, y+h-1); + glVertex2i(x, y+h-1); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::line(int x, int y, int x1, int y1) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x1, y1); + glEnd(); + point(x1, y1); +} + +void Fl_OpenGL_Graphics_Driver::line(int x, int y, int x1, int y1, int x2, int y2) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x1, y1); + glVertex2i(x2, y2); + glEnd(); + point(x2, y2); +} + +void Fl_OpenGL_Graphics_Driver::xyline(int x, int y, int x1) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x1, y); + glEnd(); + point(x1, y); +} + +void Fl_OpenGL_Graphics_Driver::xyline(int x, int y, int x1, int y2) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x1, y); + glVertex2i(x1, y2); + glEnd(); + point(x1, y2); +} + +void Fl_OpenGL_Graphics_Driver::xyline(int x, int y, int x1, int y2, int x3) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x1, y); + glVertex2i(x1, y2); + glVertex2i(x3, y2); + glEnd(); + point(x3, y2); +} + +void Fl_OpenGL_Graphics_Driver::yxline(int x, int y, int y1) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x, y1); + glEnd(); + point(x, y1); +} + +void Fl_OpenGL_Graphics_Driver::yxline(int x, int y, int y1, int x2) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x, y1); + glVertex2i(x2, y1); + glEnd(); + point(x2, y1); +} + +void Fl_OpenGL_Graphics_Driver::yxline(int x, int y, int y1, int x2, int y3) { + glBegin(GL_LINE_STRIP); + glVertex2i(x, y); + glVertex2i(x, y1); + glVertex2i(x2, y1); + glVertex2i(x2, y3); + glEnd(); + point(x2, y3); +} + +void Fl_OpenGL_Graphics_Driver::loop(int x0, int y0, int x1, int y1, int x2, int y2) { + glBegin(GL_LINE_LOOP); + glVertex2i(x0, y0); + glVertex2i(x1, y1); + glVertex2i(x2, y2); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::loop(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3) { + glBegin(GL_LINE_LOOP); + glVertex2i(x0, y0); + glVertex2i(x1, y1); + glVertex2i(x2, y2); + glVertex2i(x3, y3); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::polygon(int x0, int y0, int x1, int y1, int x2, int y2) { + glBegin(GL_POLYGON); + glVertex2i(x0, y0); + glVertex2i(x1, y1); + glVertex2i(x2, y2); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::polygon(int x0, int y0, int x1, int y1, int x2, int y2, int x3, int y3) { + glBegin(GL_POLYGON); + glVertex2i(x0, y0); + glVertex2i(x1, y1); + glVertex2i(x2, y2); + glVertex2i(x3, y3); + glEnd(); +} + +void Fl_OpenGL_Graphics_Driver::push_clip(int x, int y, int w, int h) { + // TODO: implement OpenGL clipping + if (rstackptr < region_stack_max) rstack[++rstackptr] = 0L; + else Fl::warning("Fl_OpenGL_Graphics_Driver::push_clip: clip stack overflow!\n"); +} + +int Fl_OpenGL_Graphics_Driver::clip_box(int x, int y, int w, int h, int &X, int &Y, int &W, int &H) { + // TODO: implement OpenGL clipping + X = x; Y = y; W = w, H = h; + return 0; +} + +int Fl_OpenGL_Graphics_Driver::not_clipped(int x, int y, int w, int h) { + // TODO: implement OpenGL clipping + return 1; +} + +void Fl_OpenGL_Graphics_Driver::push_no_clip() { + // TODO: implement OpenGL clipping + if (rstackptr < region_stack_max) rstack[++rstackptr] = 0; + else Fl::warning("Fl_OpenGL_Graphics_Driver::push_no_clip: clip stack overflow!\n"); + restore_clip(); +} + +void Fl_OpenGL_Graphics_Driver::pop_clip() { + // TODO: implement OpenGL clipping + if (rstackptr > 0) { + rstackptr--; + } else Fl::warning("Fl_OpenGL_Graphics_Driver::pop_clip: clip stack underflow!\n"); + restore_clip(); +} + +void Fl_OpenGL_Graphics_Driver::restore_clip() { + // TODO: implement OpenGL clipping + fl_clip_state_number++; +} + +const char *Fl_OpenGL_Graphics_Driver::class_id = "Fl_OpenGL_Graphics_Driver"; + + +#endif // FL_CFG_GFX_OPENGL_RECT_CXX + +// +// End of "$Id$". +// |