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Hook up Android_ScreenDensity to convert pixels to screen coordinates on Android

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Fixes https://github.com/libsdl-org/SDL/issues/7149
This commit is contained in:
Sam Lantinga 2023-01-25 10:22:43 -08:00
parent 9bbc402b81
commit a37f2aed7e
4 changed files with 17 additions and 8 deletions
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3
src/video/android/SDL_androidmouse.c
View file

@ -219,6 +219,9 @@ void Android_OnMouse(SDL_Window *window, int state, int action, float x, float y
return;
}
x /= Android_ScreenDensity;
y /= Android_ScreenDensity;
switch (action) {
case ACTION_DOWN:
changes = state & ~last_state;

13
src/video/android/SDL_androidvideo.c
View file

@ -61,8 +61,8 @@ int Android_SurfaceHeight = 0;
static int Android_DeviceWidth = 0;
static int Android_DeviceHeight = 0;
static Uint32 Android_ScreenFormat = SDL_PIXELFORMAT_RGB565; /* Default SurfaceView format, in case this is queried before being filled */
float Android_ScreenDensity = 1.0f;
static float Android_ScreenRate = 0.0f;
static float Android_ScreenDensity = 1.0f;
SDL_sem *Android_PauseSem = NULL;
SDL_sem *Android_ResumeSem = NULL;
SDL_mutex *Android_ActivityMutex = NULL;
@ -182,7 +182,7 @@ int Android_VideoInit(_THIS)
mode.format = Android_ScreenFormat;
mode.w = Android_DeviceWidth;
mode.h = Android_DeviceHeight;
mode.display_scale = 1.0f; /* FIXME */
mode.display_scale = Android_ScreenDensity;
mode.refresh_rate = Android_ScreenRate;
mode.driverdata = NULL;
@ -220,8 +220,8 @@ void Android_SetScreenResolution(int surfaceWidth, int surfaceHeight, int device
Android_SurfaceHeight = surfaceHeight;
Android_DeviceWidth = deviceWidth;
Android_DeviceHeight = deviceHeight;
Android_ScreenDensity = (density > 0.0f) ? density : 1.0f;
Android_ScreenRate = rate;
Android_ScreenDensity = density;
}
static Uint32 format_to_pixelFormat(int format)
@ -279,20 +279,25 @@ void Android_SendResize(SDL_Window *window)
display->desktop_mode.format = Android_ScreenFormat;
display->desktop_mode.w = Android_DeviceWidth;
display->desktop_mode.h = Android_DeviceHeight;
display->desktop_mode.display_scale = Android_ScreenDensity;
display->desktop_mode.refresh_rate = Android_ScreenRate;
}
if (window) {
/* Force the current mode to match the resize otherwise the SDL_EVENT_WINDOW_RESTORED event
* will fall back to the old mode */
int w, h;
SDL_VideoDisplay *display = SDL_GetDisplayForWindow(window);
display->display_modes[0].format = Android_ScreenFormat;
display->display_modes[0].w = Android_DeviceWidth;
display->display_modes[0].h = Android_DeviceHeight;
display->display_modes[0].display_scale = Android_ScreenDensity;
display->display_modes[0].refresh_rate = Android_ScreenRate;
display->current_mode = display->display_modes[0];
SDL_SendWindowEvent(window, SDL_EVENT_WINDOW_RESIZED, Android_SurfaceWidth, Android_SurfaceHeight);
w = (int)SDL_ceilf(Android_SurfaceWidth / Android_ScreenDensity);
h = (int)SDL_ceilf(Android_SurfaceHeight / Android_ScreenDensity);
SDL_SendWindowEvent(window, SDL_EVENT_WINDOW_RESIZED, w, h);
}
}

1
src/video/android/SDL_androidvideo.h
View file

@ -42,6 +42,7 @@ typedef struct SDL_VideoData
extern int Android_SurfaceWidth;
extern int Android_SurfaceHeight;
extern float Android_ScreenDensity;
extern SDL_sem *Android_PauseSem, *Android_ResumeSem;
extern SDL_mutex *Android_ActivityMutex;

8
src/video/android/SDL_androidwindow.c
View file

@ -54,8 +54,8 @@ int Android_CreateWindow(_THIS, SDL_Window *window)
/* Adjust the window data to match the screen */
window->x = 0;
window->y = 0;
window->w = Android_SurfaceWidth;
window->h = Android_SurfaceHeight;
window->w = (int)SDL_ceilf(Android_SurfaceWidth / Android_ScreenDensity);
window->h = (int)SDL_ceilf(Android_SurfaceHeight / Android_ScreenDensity);
/* One window, it always has focus */
SDL_SetMouseFocus(window);
@ -139,8 +139,8 @@ void Android_SetWindowFullscreen(_THIS, SDL_Window *window, SDL_VideoDisplay *di
old_w = window->w;
old_h = window->h;
new_w = ANativeWindow_getWidth(data->native_window);
new_h = ANativeWindow_getHeight(data->native_window);
new_w = (int)SDL_ceilf(ANativeWindow_getWidth(data->native_window) / Android_ScreenDensity);
new_h = (int)SDL_ceilf(ANativeWindow_getHeight(data->native_window) / Android_ScreenDensity);
if (new_w < 0 || new_h < 0) {
SDL_SetError("ANativeWindow_getWidth/Height() fails");