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authorDees_Troy <dees_troy@teamw.in>2013-09-04 20:35:08 +0200
committerDees_Troy <dees_troy@teamw.in>2013-09-04 21:00:58 +0200
commit1669f89dd288e2ba226233a7fd62ea78ddb473c1 (patch)
treee6d72d724b31b6fa72e6d273a9c6c8661d5c9c2c /minui/resources.c
parentInitialize TWPartition::User_Rm_Rf to false in constructor (diff)
parentMerge "Update libpng API usage" (diff)
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Diffstat (limited to 'minui/resources.c')
-rw-r--r--minui/resources.c163
1 files changed, 153 insertions, 10 deletions
diff --git a/minui/resources.c b/minui/resources.c
index 5e2062192..c0a9ccacb 100644
--- a/minui/resources.c
+++ b/minui/resources.c
@@ -33,6 +33,8 @@
#include "minui.h"
+extern char* locale;
+
// libpng gives "undefined reference to 'pow'" errors, and I have no
// idea how to convince the build system to link with -lm. We don't
// need this functionality (it's used for gamma adjustment) so provide
@@ -91,22 +93,25 @@ int res_create_surface(const char* name, gr_surface* pSurface) {
png_set_sig_bytes(png_ptr, sizeof(header));
png_read_info(png_ptr, info_ptr);
- size_t width = info_ptr->width;
- size_t height = info_ptr->height;
- size_t stride = 4 * width;
- size_t pixelSize = stride * height;
+ int color_type, bit_depth;
+ size_t width, height;
+ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
+ &color_type, NULL, NULL, NULL);
+
+ int channels = png_get_channels(png_ptr, info_ptr);
- int color_type = info_ptr->color_type;
- int bit_depth = info_ptr->bit_depth;
- int channels = info_ptr->channels;
if (!(bit_depth == 8 &&
((channels == 3 && color_type == PNG_COLOR_TYPE_RGB) ||
(channels == 4 && color_type == PNG_COLOR_TYPE_RGBA) ||
- (channels == 1 && color_type == PNG_COLOR_TYPE_PALETTE)))) {
+ (channels == 1 && (color_type == PNG_COLOR_TYPE_PALETTE ||
+ color_type == PNG_COLOR_TYPE_GRAY))))) {
return -7;
goto exit;
}
+ size_t stride = (color_type == PNG_COLOR_TYPE_GRAY ? 1 : 4) * width;
+ size_t pixelSize = stride * height;
+
surface = malloc(sizeof(GGLSurface) + pixelSize);
if (surface == NULL) {
result = -8;
@@ -118,8 +123,8 @@ int res_create_surface(const char* name, gr_surface* pSurface) {
surface->height = height;
surface->stride = width; /* Yes, pixels, not bytes */
surface->data = pData;
- surface->format = (channels == 3) ?
- GGL_PIXEL_FORMAT_RGBX_8888 : GGL_PIXEL_FORMAT_RGBA_8888;
+ surface->format = (channels == 3) ? GGL_PIXEL_FORMAT_RGBX_8888 :
+ ((color_type == PNG_COLOR_TYPE_PALETTE ? GGL_PIXEL_FORMAT_RGBA_8888 : GGL_PIXEL_FORMAT_L_8));
int alpha = 0;
if (color_type == PNG_COLOR_TYPE_PALETTE) {
@@ -129,6 +134,9 @@ int res_create_surface(const char* name, gr_surface* pSurface) {
png_set_tRNS_to_alpha(png_ptr);
alpha = 1;
}
+ if (color_type == PNG_COLOR_TYPE_GRAY) {
+ alpha = 1;
+ }
unsigned int y;
if (channels == 3 || (channels == 1 && !alpha)) {
@@ -173,6 +181,141 @@ exit:
return result;
}
+static int matches_locale(const char* loc) {
+ if (locale == NULL) return 0;
+
+ if (strcmp(loc, locale) == 0) return 1;
+
+ // if loc does *not* have an underscore, and it matches the start
+ // of locale, and the next character in locale *is* an underscore,
+ // that's a match. For instance, loc == "en" matches locale ==
+ // "en_US".
+
+ int i;
+ for (i = 0; loc[i] != 0 && loc[i] != '_'; ++i);
+ if (loc[i] == '_') return 0;
+
+ return (strncmp(locale, loc, i) == 0 && locale[i] == '_');
+}
+
+int res_create_localized_surface(const char* name, gr_surface* pSurface) {
+ char resPath[256];
+ GGLSurface* surface = NULL;
+ int result = 0;
+ unsigned char header[8];
+ png_structp png_ptr = NULL;
+ png_infop info_ptr = NULL;
+
+ *pSurface = NULL;
+
+ snprintf(resPath, sizeof(resPath)-1, "/res/images/%s.png", name);
+ resPath[sizeof(resPath)-1] = '\0';
+ FILE* fp = fopen(resPath, "rb");
+ if (fp == NULL) {
+ result = -1;
+ goto exit;
+ }
+
+ size_t bytesRead = fread(header, 1, sizeof(header), fp);
+ if (bytesRead != sizeof(header)) {
+ result = -2;
+ goto exit;
+ }
+
+ if (png_sig_cmp(header, 0, sizeof(header))) {
+ result = -3;
+ goto exit;
+ }
+
+ png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
+ if (!png_ptr) {
+ result = -4;
+ goto exit;
+ }
+
+ info_ptr = png_create_info_struct(png_ptr);
+ if (!info_ptr) {
+ result = -5;
+ goto exit;
+ }
+
+ if (setjmp(png_jmpbuf(png_ptr))) {
+ result = -6;
+ goto exit;
+ }
+
+ png_init_io(png_ptr, fp);
+ png_set_sig_bytes(png_ptr, sizeof(header));
+ png_read_info(png_ptr, info_ptr);
+
+ int color_type, bit_depth;
+ size_t width, height;
+ png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth,
+ &color_type, NULL, NULL, NULL);
+ int channels = png_get_channels(png_ptr, info_ptr);
+
+ if (!(bit_depth == 8 &&
+ (channels == 1 && color_type == PNG_COLOR_TYPE_GRAY))) {
+ return -7;
+ goto exit;
+ }
+
+ unsigned char* row = malloc(width);
+ int y;
+ for (y = 0; y < height; ++y) {
+ png_read_row(png_ptr, row, NULL);
+ int w = (row[1] << 8) | row[0];
+ int h = (row[3] << 8) | row[2];
+ int len = row[4];
+ char* loc = row+5;
+
+ if (y+1+h >= height || matches_locale(loc)) {
+ printf(" %20s: %s (%d x %d @ %d)\n", name, loc, w, h, y);
+
+ surface = malloc(sizeof(GGLSurface));
+ if (surface == NULL) {
+ result = -8;
+ goto exit;
+ }
+ unsigned char* pData = malloc(w*h);
+
+ surface->version = sizeof(GGLSurface);
+ surface->width = w;
+ surface->height = h;
+ surface->stride = w; /* Yes, pixels, not bytes */
+ surface->data = pData;
+ surface->format = GGL_PIXEL_FORMAT_A_8;
+
+ int i;
+ for (i = 0; i < h; ++i, ++y) {
+ png_read_row(png_ptr, row, NULL);
+ memcpy(pData + i*w, row, w);
+ }
+
+ *pSurface = (gr_surface) surface;
+ break;
+ } else {
+ int i;
+ for (i = 0; i < h; ++i, ++y) {
+ png_read_row(png_ptr, row, NULL);
+ }
+ }
+ }
+
+exit:
+ png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
+
+ if (fp != NULL) {
+ fclose(fp);
+ }
+ if (result < 0) {
+ if (surface) {
+ free(surface);
+ }
+ }
+ return result;
+}
+
void res_free_surface(gr_surface surface) {
GGLSurface* pSurface = (GGLSurface*) surface;
if (pSurface) {