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authorDoug Zongker <dougz@google.com>2014-03-18 00:11:02 +0100
committerDoug Zongker <dougz@google.com>2014-03-18 00:11:02 +0100
commit80c1a386d3f614919708b37986919ecaf74ee738 (patch)
tree2dda152c800117f1f6c7e789c7fb88bd5640f89b /minui/minui.h
parentam 026ebe02: Merge "Recovery 64-bit compile issues" (diff)
parentMerge "refactor image resource loading code in minui" (diff)
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Diffstat (limited to 'minui/minui.h')
-rw-r--r--minui/minui.h38
1 files changed, 34 insertions, 4 deletions
diff --git a/minui/minui.h b/minui/minui.h
index 328da1e6c..d8d53fa27 100644
--- a/minui/minui.h
+++ b/minui/minui.h
@@ -80,10 +80,40 @@ void ev_dispatch(void);
// Resources
-// Returns 0 if no error, else negative.
-int res_create_surface(const char* name, gr_surface* pSurface);
-int res_create_multi_surface(const char* name, int* frames, gr_surface** pSurface);
-int res_create_localized_surface(const char* name, gr_surface* pSurface);
+// res_create_*_surface() functions return 0 if no error, else
+// negative.
+//
+// A "display" surface is one that is intended to be drawn to the
+// screen with gr_blit(). An "alpha" surface is a grayscale image
+// interpreted as an alpha mask used to render text in the current
+// color (with gr_text() or gr_texticon()).
+//
+// All these functions load PNG images from "/res/images/${name}.png".
+
+// Load a single display surface from a PNG image.
+int res_create_display_surface(const char* name, gr_surface* pSurface);
+
+// Load an array of display surfaces from a single PNG image. The PNG
+// should have a 'Frames' text chunk whose value is the number of
+// frames this image represents. The pixel data itself is interlaced
+// by row.
+int res_create_multi_display_surface(const char* name,
+ int* frames, gr_surface** pSurface);
+
+// Load a single alpha surface from a grayscale PNG image.
+int res_create_alpha_surface(const char* name, gr_surface* pSurface);
+
+// Load part of a grayscale PNG image that is the first match for the
+// given locale. The image is expected to be a composite of multiple
+// translations of the same text, with special added rows that encode
+// the subimages' size and intended locale in the pixel data. See
+// development/tools/recovery_l10n for an app that will generate these
+// specialized images from Android resources.
+int res_create_localized_alpha_surface(const char* name, const char* locale,
+ gr_surface* pSurface);
+
+// Free a surface allocated by any of the res_create_*_surface()
+// functions.
void res_free_surface(gr_surface surface);
#ifdef __cplusplus