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authorMatthias Melcher <github@matthiasm.com>2022-02-06 15:22:24 +0100
committerGitHub <noreply@github.com>2022-02-06 15:22:24 +0100
commitdb0a1f4baeb928b54d328d5dfbd0ec37b0b58bd3 (patch)
treeed53495f5dd435d7c23cd4267fb785e5ebca679c /test/cube.cxx
parentaf4954aee3483f03ff69e990e80f4e4a18e8b7f6 (diff)
OpenGL implementation of all `fl_` "Drawing Fast Shapes" graphics calls (#385)
* Fix build system for unites, * Updated unittest to check OpenGL drawing. Making sure that OpenGL drawing is exactly the same as native drawing to make FLTK widget rendering look the same in GL windows. * Make OpenGL optional. * Implemented clipping in OpenGL * unites drawing fast shapes * Fixed CMake * Updating unittest. Added tests for fl_pi and fl_arc (int) Renamed tab to render complex shapes. * Improved OpenGL FLTK drawing emulation. * Fixed GTK ROUND DOWN BOX * Fixing Makefile for unittest * Correctly aligning OpenGL text. * Fixed text alignment in GL windows. Explained the "FLTK over GL " example in Cube. * Overlapping test. * Better GL graphics alignment. * Drawing the focus rect. * Adding Alpha Channel support for GL. * Added FLTK-on-GL documentation.
Diffstat (limited to 'test/cube.cxx')
-rw-r--r--test/cube.cxx18
1 files changed, 17 insertions, 1 deletions
diff --git a/test/cube.cxx b/test/cube.cxx
index 64e9044cd..fa96130ee 100644
--- a/test/cube.cxx
+++ b/test/cube.cxx
@@ -18,6 +18,7 @@
#include <config.h>
#include <FL/Fl.H>
+#include <FL/fl_ask.H>
#include <FL/Fl_Window.H>
#include <FL/Fl_Box.H>
#include <FL/Fl_Button.H>
@@ -184,6 +185,12 @@ void print_cb(Fl_Widget *w, void *data)
#define MARGIN2 (MARGIN*2)
#define MARGIN3 (MARGIN*3)
+void show_info_cb(Fl_Widget*, void*) {
+ fl_message("This is an example of using FLTK widgets inside OpenGL windows.\n"
+ "Multiple widgets can be added to Fl_Gl_Windows. They will be\n"
+ "rendered as overlays over the scene.");
+}
+
void makeform(const char *name) {
// Widget's XYWH's
int form_w = 800 + 4 * MARGIN; // main window width
@@ -207,6 +214,14 @@ void makeform(const char *name) {
lt_grp->begin();
// left GL window
lt_cube = new cube_box(lt_cub_x, lt_cub_y, lt_cub_w, lt_cub_h, 0);
+
+ lt_cube->begin();
+ Fl_Widget *w = new Fl_Button(10, 10, 120, 30, "FLTK over GL");
+ w->color(FL_FREE_COLOR);
+ w->box(FL_BORDER_BOX );
+ w->callback(show_info_cb);
+ lt_cube->end();
+
// center group
Fl_Group *ct_grp = new Fl_Group(ct_grp_x, ct_grp_y, ct_grp_w, ct_grp_h);
ct_grp->begin();
@@ -238,6 +253,7 @@ void makeform(const char *name) {
int main(int argc, char **argv) {
Fl::use_high_res_GL(1);
+ Fl::set_color(FL_FREE_COLOR, 255, 255, 0, 75);
makeform(argv[0]);
speed->bounds(4,0);
#if HAVE_GL
@@ -246,7 +262,7 @@ int main(int argc, char **argv) {
speed->value(lt_cube->speed = rt_cube->speed = 0.0);
#endif
size->bounds(4,0.01);
- size->value(lt_cube->size = rt_cube->size = 1.0);
+ size->value(lt_cube->size = rt_cube->size = 3.0);
flat->value(1); lt_cube->wire = 0; rt_cube->wire = 1;
form->label("cube");
form->show(argc,argv);