static int
SDL_RendererEventWatch(void *userdata, SDL_Event *event)
{
SDL_Renderer *renderer = (SDL_Renderer *)userdata;
if (event->type == SDL_WINDOWEVENT) {
SDL_Window *window = SDL_GetWindowFromID(event->window.windowID);
if (window == renderer->window) {
if (renderer->WindowEvent) {
renderer->WindowEvent(renderer, &event->window);
}
if (event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
/* Try to keep the previous viewport centered */
int w, h;
SDL_Rect viewport;
SDL_GetWindowSize(window, &w, &h);
viewport.x = (w - renderer->viewport.w) / 2;
viewport.y = (h - renderer->viewport.h) / 2;
viewport.w = renderer->viewport.w;
viewport.h = renderer->viewport.h;
SDL_RenderSetViewport(renderer, &viewport);
} else if (event->window.event == SDL_WINDOWEVENT_MINIMIZED) {
renderer->minimized = SDL_TRUE;
} else if (event->window.event == SDL_WINDOWEVENT_RESTORED) {
renderer->minimized = SDL_FALSE;
}
}
}
return 0;
}
static int
SDL_RendererEventWatch(void *userdata, SDL_Event *event)
{
SDL_Renderer *renderer = (SDL_Renderer *)userdata;
if (event->type == SDL_WINDOWEVENT) {
SDL_Window *window = SDL_GetWindowFromID(event->window.windowID);
if (window == renderer->window) {
if (renderer->WindowEvent) {
renderer->WindowEvent(renderer, &event->window);
}
if (event->window.event == SDL_WINDOWEVENT_RESIZED) {
/* Try to keep the previous viewport centered */
int w, h;
SDL_Rect viewport;
SDL_GetWindowSize(window, &w, &h);
if (renderer->target) {
renderer->viewport_backup.x = (w - renderer->viewport_backup.w) / 2;
renderer->viewport_backup.y = (h - renderer->viewport_backup.h) / 2;
} else {
viewport.x = (w - renderer->viewport.w) / 2;
viewport.y = (h - renderer->viewport.h) / 2;
viewport.w = renderer->viewport.w;
viewport.h = renderer->viewport.h;
SDL_RenderSetViewport(renderer, &viewport);
}
renderer->resized = SDL_TRUE;
} else if (event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
int w, h;
SDL_Rect viewport;
if (!renderer->resized) {
/* Window was programmatically resized, reset viewport */
SDL_GetWindowSize(window, &w, &h);
if (renderer->target) {
renderer->viewport_backup.x = 0;
renderer->viewport_backup.y = 0;
renderer->viewport_backup.w = w;
renderer->viewport_backup.h = h;
} else {
viewport.x = 0;
viewport.y = 0;
viewport.w = w;
viewport.h = h;
SDL_RenderSetViewport(renderer, &viewport);
}
renderer->resized = SDL_FALSE;
}
} else if (event->window.event == SDL_WINDOWEVENT_HIDDEN) {
renderer->hidden = SDL_TRUE;
} else if (event->window.event == SDL_WINDOWEVENT_SHOWN) {
if (!(SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)) {
renderer->hidden = SDL_FALSE;
}
} else if (event->window.event == SDL_WINDOWEVENT_MINIMIZED) {
renderer->hidden = SDL_TRUE;
} else if (event->window.event == SDL_WINDOWEVENT_RESTORED) {
if (!(SDL_GetWindowFlags(window) & SDL_WINDOW_HIDDEN)) {
renderer->hidden = SDL_FALSE;
}
}
}
}
return 0;
}
static int
SDL_RendererEventWatch(void *userdata, SDL_Event *event)
{
SDL_Renderer *renderer = (SDL_Renderer *)userdata;
if (event->type == SDL_WINDOWEVENT) {
SDL_Window *window = SDL_GetWindowFromID(event->window.windowID);
if (window == renderer->window) {
if (renderer->WindowEvent) {
renderer->WindowEvent(renderer, &event->window);
}
if (event->window.event == SDL_WINDOWEVENT_SIZE_CHANGED) {
if (renderer->logical_w) {
UpdateLogicalSize(renderer);
} else {
/* Window was resized, reset viewport */
int w, h;
SDL_GetWindowSize(window, &w, &h);
if (renderer->target) {
renderer->viewport_backup.x = 0;
renderer->viewport_backup.y = 0;
renderer->viewport_backup.w = w;
renderer->viewport_backup.h = h;
} else {
renderer->viewport.x = 0;
renderer->viewport.y = 0;
renderer->viewport.w = w;
renderer->viewport.h = h;
renderer->UpdateViewport(renderer);
}
}
} else if (event->window.event == SDL_WINDOWEVENT_HIDDEN) {
renderer->hidden = SDL_TRUE;
} else if (event->window.event == SDL_WINDOWEVENT_SHOWN) {
if (!(SDL_GetWindowFlags(window) & SDL_WINDOW_MINIMIZED)) {
renderer->hidden = SDL_FALSE;
}
} else if (event->window.event == SDL_WINDOWEVENT_MINIMIZED) {
renderer->hidden = SDL_TRUE;
} else if (event->window.event == SDL_WINDOWEVENT_RESTORED) {
if (!(SDL_GetWindowFlags(window) & SDL_WINDOW_HIDDEN)) {
renderer->hidden = SDL_FALSE;
}
}
}
} else if (event->type == SDL_MOUSEMOTION) {
if (renderer->logical_w) {
event->motion.x -= renderer->viewport.x;
event->motion.y -= renderer->viewport.y;
event->motion.x = (int)(event->motion.x / renderer->scale.x);
event->motion.y = (int)(event->motion.y / renderer->scale.y);
}
} else if (event->type == SDL_MOUSEBUTTONDOWN ||
event->type == SDL_MOUSEBUTTONUP) {
if (renderer->logical_w) {
event->button.x -= renderer->viewport.x;
event->button.y -= renderer->viewport.y;
event->button.x = (int)(event->button.x / renderer->scale.x);
event->button.y = (int)(event->button.y / renderer->scale.y);
}
}
return 0;
}
