blob: c19c0a5d8dc5856269aba5edd72314862f8c3751 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
|
#include "RenderArea.h"
#include <iostream>
#include <cstdlib>
#include <GL/gl.h>
namespace ZoomEdit {
namespace Gui {
GdkGLConfig *RenderArea::glconfig = NULL;
RenderArea::RenderArea(BaseObjectType *cobject, const Glib::RefPtr<Gnome::Glade::Xml> &xml)
: Gtk::DrawingArea(cobject) {
if(!glconfig) {
glconfig = gdk_gl_config_new_by_mode((GdkGLConfigMode)(GDK_GL_MODE_RGB | GDK_GL_MODE_DOUBLE));
if(!glconfig) glconfig = gdk_gl_config_new_by_mode(GDK_GL_MODE_RGB); // Hmm, can't find double buffered config
if(!glconfig) {
std::cerr << "*** No appropriate OpenGL-capable visual found." << std::endl;
std::exit(1);
}
}
signal_realize().connect(sigc::mem_fun(this, &RenderArea::onRealize));
gtk_widget_set_gl_capability(GTK_WIDGET(cobject), glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE);
}
RenderArea::~RenderArea() {
}
void RenderArea::onRealize() {
GtkWidget *widget = GTK_WIDGET(gobj());
GdkGLContext *context = gtk_widget_get_gl_context(widget);
GdkGLDrawable *drawable = gtk_widget_get_gl_drawable(widget);
if(!gdk_gl_drawable_gl_begin(drawable, context))
return;
glClearColor(0, 0, 0, 0);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
glEnable(GL_LINE_SMOOTH);
glEnable(GL_POINT_SMOOTH);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gdk_gl_drawable_gl_end(drawable);
}
}
}
|
