mirror of
https://github.com/brl/mutter.git
synced 2024-12-25 20:32:16 +00:00
9f107ab3fb
The SDL2 winsys will now set the SDL_WINDOW_RESIZABLE flag on the window before creating it if the resizable property is set on the onscreen. Note that there doesn't appear to be a way in SDL to change the flag later so unlike the other winsyses it will only take affect if it is set before allocating the framebuffer. The winsys now registers a callback for SDL events so that it can report window size changes back to the application. Reviewed-by: Robert Bragg <robert@linux.intel.com> (cherry picked from commit 0dea9aeb897faf029828379b120970477df3c7d5)
141 lines
3.2 KiB
C
141 lines
3.2 KiB
C
#include <cogl/cogl.h>
|
|
#include <stdio.h>
|
|
#include <SDL.h>
|
|
|
|
/* This short example is just to demonstrate mixing SDL with Cogl as a
|
|
simple way to get portable support for events */
|
|
|
|
typedef struct Data
|
|
{
|
|
CoglPrimitive *triangle;
|
|
CoglPipeline *pipeline;
|
|
float center_x, center_y;
|
|
CoglFramebuffer *fb;
|
|
CoglBool quit;
|
|
CoglBool redraw_queued;
|
|
} Data;
|
|
|
|
static CoglBool
|
|
redraw (Data *data)
|
|
{
|
|
CoglFramebuffer *fb = data->fb;
|
|
|
|
cogl_framebuffer_clear4f (fb, COGL_BUFFER_BIT_COLOR, 0, 0, 0, 1);
|
|
|
|
cogl_framebuffer_push_matrix (fb);
|
|
cogl_framebuffer_translate (fb, data->center_x, -data->center_y, 0.0f);
|
|
|
|
cogl_framebuffer_draw_primitive (fb, data->pipeline, data->triangle);
|
|
cogl_framebuffer_pop_matrix (fb);
|
|
|
|
cogl_onscreen_swap_buffers (COGL_ONSCREEN (fb));
|
|
|
|
return FALSE;
|
|
}
|
|
|
|
static void
|
|
handle_event (Data *data, SDL_Event *event)
|
|
{
|
|
switch (event->type)
|
|
{
|
|
case SDL_WINDOWEVENT:
|
|
switch (event->window.event)
|
|
{
|
|
case SDL_WINDOWEVENT_EXPOSED:
|
|
data->redraw_queued = TRUE;
|
|
break;
|
|
|
|
case SDL_WINDOWEVENT_CLOSE:
|
|
data->quit = TRUE;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case SDL_MOUSEMOTION:
|
|
{
|
|
int width =
|
|
cogl_framebuffer_get_width (COGL_FRAMEBUFFER (data->fb));
|
|
int height =
|
|
cogl_framebuffer_get_height (COGL_FRAMEBUFFER (data->fb));
|
|
|
|
data->center_x = event->motion.x * 2.0f / width - 1.0f;
|
|
data->center_y = event->motion.y * 2.0f / height - 1.0f;
|
|
|
|
data->redraw_queued = TRUE;
|
|
}
|
|
break;
|
|
|
|
case SDL_QUIT:
|
|
data->quit = TRUE;
|
|
break;
|
|
}
|
|
}
|
|
|
|
int
|
|
main (int argc, char **argv)
|
|
{
|
|
CoglContext *ctx;
|
|
CoglOnscreen *onscreen;
|
|
CoglError *error = NULL;
|
|
CoglVertexP2C4 triangle_vertices[] = {
|
|
{0, 0.7, 0xff, 0x00, 0x00, 0x80},
|
|
{-0.7, -0.7, 0x00, 0xff, 0x00, 0xff},
|
|
{0.7, -0.7, 0x00, 0x00, 0xff, 0xff}
|
|
};
|
|
Data data;
|
|
SDL_Event event;
|
|
|
|
ctx = cogl_sdl_context_new (SDL_USEREVENT, &error);
|
|
if (!ctx)
|
|
{
|
|
fprintf (stderr, "Failed to create context: %s\n", error->message);
|
|
return 1;
|
|
}
|
|
|
|
onscreen = cogl_onscreen_new (ctx, 800, 600);
|
|
data.fb = COGL_FRAMEBUFFER (onscreen);
|
|
|
|
data.center_x = 0.0f;
|
|
data.center_y = 0.0f;
|
|
data.quit = FALSE;
|
|
|
|
/* In SDL2, setting resizable only works before allocating the
|
|
* onscreen */
|
|
cogl_onscreen_set_resizable (onscreen, TRUE);
|
|
|
|
cogl_onscreen_show (onscreen);
|
|
|
|
data.triangle = cogl_primitive_new_p2c4 (ctx, COGL_VERTICES_MODE_TRIANGLES,
|
|
3, triangle_vertices);
|
|
data.pipeline = cogl_pipeline_new (ctx);
|
|
|
|
data.redraw_queued = TRUE;
|
|
while (!data.quit)
|
|
{
|
|
while (!data.quit)
|
|
{
|
|
if (!SDL_PollEvent (&event))
|
|
{
|
|
if (data.redraw_queued)
|
|
break;
|
|
|
|
cogl_sdl_idle (ctx);
|
|
if (!SDL_WaitEvent (&event))
|
|
{
|
|
fprintf (stderr, "Error waiting for SDL events");
|
|
return 1;
|
|
}
|
|
}
|
|
|
|
handle_event (&data, &event);
|
|
cogl_sdl_handle_event (ctx, &event);
|
|
}
|
|
|
|
data.redraw_queued = redraw (&data);
|
|
}
|
|
|
|
cogl_object_unref (ctx);
|
|
|
|
return 0;
|
|
}
|