154 lines
3.9 KiB
C
Executable File
154 lines
3.9 KiB
C
Executable File
/*
|
|
Copyright 1997-2022 Sam Lantinga
|
|
Copyright 2022 Collabora Ltd.
|
|
SPDX-License-Identifier: Zlib
|
|
*/
|
|
|
|
#include "testutils.h"
|
|
|
|
/*
|
|
* Return the absolute path to def in the SDL_GetBasePath() if possible, or
|
|
* the relative path to def on platforms that don't have a working
|
|
* SDL_GetBasePath(). Free the result with SDL_free.
|
|
*
|
|
* Fails and returns NULL if out of memory.
|
|
*/
|
|
char *
|
|
GetNearbyFilename(const char *file)
|
|
{
|
|
char *base;
|
|
char *path;
|
|
|
|
base = SDL_GetBasePath();
|
|
|
|
if (base != NULL) {
|
|
SDL_RWops *rw;
|
|
size_t len = SDL_strlen(base) + SDL_strlen(file) + 1;
|
|
|
|
path = SDL_malloc(len);
|
|
|
|
if (path == NULL) {
|
|
SDL_free(base);
|
|
SDL_OutOfMemory();
|
|
return NULL;
|
|
}
|
|
|
|
SDL_snprintf(path, len, "%s%s", base, file);
|
|
SDL_free(base);
|
|
|
|
rw = SDL_RWFromFile(path, "rb");
|
|
if (rw) {
|
|
SDL_RWclose(rw);
|
|
return path;
|
|
}
|
|
|
|
/* Couldn't find the file in the base path */
|
|
SDL_free(path);
|
|
}
|
|
|
|
path = SDL_strdup(file);
|
|
if (path == NULL) {
|
|
SDL_OutOfMemory();
|
|
}
|
|
return path;
|
|
}
|
|
|
|
/*
|
|
* If user_specified is non-NULL, return a copy of it. Free with SDL_free.
|
|
*
|
|
* Otherwise, return the absolute path to def in the SDL_GetBasePath() if
|
|
* possible, or the relative path to def on platforms that don't have a
|
|
* working SDL_GetBasePath(). Free the result with SDL_free.
|
|
*
|
|
* Fails and returns NULL if out of memory.
|
|
*/
|
|
char *
|
|
GetResourceFilename(const char *user_specified, const char *def)
|
|
{
|
|
if (user_specified != NULL) {
|
|
char *ret = SDL_strdup(user_specified);
|
|
|
|
if (ret == NULL) {
|
|
SDL_OutOfMemory();
|
|
}
|
|
|
|
return ret;
|
|
} else {
|
|
return GetNearbyFilename(def);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Load the .bmp file whose name is file, from the SDL_GetBasePath() if
|
|
* possible or the current working directory if not.
|
|
*
|
|
* If transparent is true, set the transparent colour from the top left pixel.
|
|
*
|
|
* If width_out is non-NULL, set it to the texture width.
|
|
*
|
|
* If height_out is non-NULL, set it to the texture height.
|
|
*/
|
|
SDL_Texture *
|
|
LoadTexture(SDL_Renderer *renderer, const char *file, SDL_bool transparent,
|
|
int *width_out, int *height_out)
|
|
{
|
|
SDL_Surface *temp = NULL;
|
|
SDL_Texture *texture = NULL;
|
|
char *path;
|
|
|
|
path = GetNearbyFilename(file);
|
|
|
|
if (path != NULL) {
|
|
file = path;
|
|
}
|
|
|
|
temp = SDL_LoadBMP(file);
|
|
if (temp == NULL) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't load %s: %s", file, SDL_GetError());
|
|
} else {
|
|
/* Set transparent pixel as the pixel at (0,0) */
|
|
if (transparent) {
|
|
if (temp->format->palette) {
|
|
SDL_SetColorKey(temp, SDL_TRUE, *(Uint8 *)temp->pixels);
|
|
} else {
|
|
switch (temp->format->BitsPerPixel) {
|
|
case 15:
|
|
SDL_SetColorKey(temp, SDL_TRUE,
|
|
(*(Uint16 *) temp->pixels) & 0x00007FFF);
|
|
break;
|
|
case 16:
|
|
SDL_SetColorKey(temp, SDL_TRUE, *(Uint16 *) temp->pixels);
|
|
break;
|
|
case 24:
|
|
SDL_SetColorKey(temp, SDL_TRUE,
|
|
(*(Uint32 *) temp->pixels) & 0x00FFFFFF);
|
|
break;
|
|
case 32:
|
|
SDL_SetColorKey(temp, SDL_TRUE, *(Uint32 *) temp->pixels);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (width_out != NULL) {
|
|
*width_out = temp->w;
|
|
}
|
|
|
|
if (height_out != NULL) {
|
|
*height_out = temp->h;
|
|
}
|
|
|
|
texture = SDL_CreateTextureFromSurface(renderer, temp);
|
|
if (!texture) {
|
|
SDL_LogError(SDL_LOG_CATEGORY_APPLICATION, "Couldn't create texture: %s\n", SDL_GetError());
|
|
}
|
|
}
|
|
if (temp) {
|
|
SDL_FreeSurface(temp);
|
|
}
|
|
if (path) {
|
|
SDL_free(path);
|
|
}
|
|
return texture;
|
|
}
|