1 /**************************************************************************
3 * Copyright 2011 Jose Fonseca
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
24 **************************************************************************/
26 #include "glimports.hpp"
33 class GlxVisual : public Visual
38 GlxVisual(XVisualInfo *vi) :
48 class GlxDrawable : public Drawable
54 GlxDrawable(const Visual *vis, Display *dpy, Window win) :
61 XDestroyWindow(display, window);
65 resize(unsigned w, unsigned h) {
67 Drawable::resize(w, h);
68 XResizeWindow(display, window, w, h);
72 void swapBuffers(void) {
73 glXSwapBuffers(display, window);
78 class GlxContext : public Context
84 GlxContext(const Visual *vis, Display *dpy, GLXContext ctx) :
91 glXDestroyContext(display, context);
96 class GlxWindowSystem : public WindowSystem
104 display = XOpenDisplay(NULL);
105 screen = DefaultScreen(display);
109 XCloseDisplay(display);
113 createVisual(bool doubleBuffer) {
114 int single_attribs[] = {
124 int double_attribs[] = {
135 XVisualInfo *visinfo;
137 visinfo = glXChooseVisual(display, screen, doubleBuffer ? double_attribs : single_attribs);
139 return new GlxVisual(visinfo);
143 createDrawable(const Visual *visual)
145 XVisualInfo *visinfo = dynamic_cast<const GlxVisual *>(visual)->visinfo;
147 Window root = RootWindow(display, screen);
149 /* window attributes */
150 XSetWindowAttributes attr;
151 attr.background_pixel = 0;
152 attr.border_pixel = 0;
153 attr.colormap = XCreateColormap(display, root, visinfo->visual, AllocNone);
154 attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
157 mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
159 int x = 0, y = 0, width = 256, height = 256;
161 Window window = XCreateWindow(
171 XSizeHints sizehints;
174 sizehints.width = width;
175 sizehints.height = height;
176 sizehints.flags = USSize | USPosition;
177 XSetNormalHints(display, window, &sizehints);
179 const char *name = "glretrace";
180 XSetStandardProperties(
181 display, window, name, name,
182 None, (char **)NULL, 0, &sizehints);
184 XMapWindow(display, window);
186 return new GlxDrawable(visual, display, window);
190 createContext(const Visual *visual)
192 XVisualInfo *visinfo = dynamic_cast<const GlxVisual *>(visual)->visinfo;
193 GLXContext context = glXCreateContext(display, visinfo, NULL, True);
194 return new GlxContext(visual, display, context);
198 makeCurrent(Drawable *drawable, Context *context)
200 if (!drawable || !context) {
201 return glXMakeCurrent(display, None, NULL);
203 GlxDrawable *glxDrawable = dynamic_cast<GlxDrawable *>(drawable);
204 GlxContext *glxContext = dynamic_cast<GlxContext *>(context);
206 return glXMakeCurrent(display, glxDrawable->window, glxContext->context);
211 processEvents(void) {
212 while (XPending(display) > 0) {
214 XNextEvent(display, &event);
222 WindowSystem *createNativeWindowSystem(void) {
223 return new GlxWindowSystem();
227 } /* namespace glretrace */