Adding text metrics to renderscript.
Change-Id: Ica460525243d714a278e4ad5e436af43e1008e0c
diff --git a/rsFont.h b/rsFont.h
index 16009ef..0012b84 100644
--- a/rsFont.h
+++ b/rsFont.h
@@ -45,12 +45,26 @@
class Font : public ObjectBase
{
public:
- ~Font();
+ enum RenderMode {
+ FRAMEBUFFER,
+ BITMAP,
+ MEASURE,
+ };
- // Pointer to the utf data, length of data, where to start, number of glyphs ot read
- // (each glyph may be longer than a char because we are dealing with utf data)
- // Last two variables are the initial pen position
- void renderUTF(const char *text, uint32_t len, uint32_t start, int numGlyphs, int x, int y);
+ struct Rect {
+ int32_t left;
+ int32_t top;
+ int32_t right;
+ int32_t bottom;
+ void set(int32_t l, int32_t r, int32_t t, int32_t b) {
+ left = l;
+ right = r;
+ top = t;
+ bottom = b;
+ }
+ };
+
+ ~Font();
// Currently files do not get serialized,
// but we need to inherit from ObjectBase for ref tracking
@@ -66,6 +80,14 @@
friend class FontState;
+ // Pointer to the utf data, length of data, where to start, number of glyphs ot read
+ // (each glyph may be longer than a char because we are dealing with utf data)
+ // Last two variables are the initial pen position
+ void renderUTF(const char *text, uint32_t len, int32_t x, int32_t y,
+ uint32_t start, int32_t numGlyphs,
+ RenderMode mode = FRAMEBUFFER, Rect *bounds = NULL,
+ uint8_t *bitmap = NULL, uint32_t bitmapW = 0, uint32_t bitmapH = 0);
+
void invalidateTextureCache();
struct CachedGlyphInfo
{
@@ -106,7 +128,10 @@
CachedGlyphInfo *cacheGlyph(uint32_t glyph);
void updateGlyphCache(CachedGlyphInfo *glyph);
- void drawCachedGlyph(CachedGlyphInfo *glyph, int x, int y);
+ void measureCachedGlyph(CachedGlyphInfo *glyph, int32_t x, int32_t y, Rect *bounds);
+ void drawCachedGlyph(CachedGlyphInfo *glyph, int32_t x, int32_t y);
+ void drawCachedGlyph(CachedGlyphInfo *glyph, int32_t x, int32_t y,
+ uint8_t *bitmap, uint32_t bitmapW, uint32_t bitmapH);
};
class FontState
@@ -121,10 +146,13 @@
ObjectBaseRef<Font> mDefault;
ObjectBaseRef<Font> mLast;
- void renderText(const char *text, uint32_t len, uint32_t startIndex, int numGlyphs, int x, int y);
- void renderText(const char *text, int x, int y);
- void renderText(Allocation *alloc, int x, int y);
- void renderText(Allocation *alloc, uint32_t start, int len, int x, int y);
+ void renderText(const char *text, uint32_t len, int32_t x, int32_t y,
+ uint32_t startIndex = 0, int numGlyphs = -1,
+ Font::RenderMode mode = Font::FRAMEBUFFER,
+ Font::Rect *bounds = NULL,
+ uint8_t *bitmap = NULL, uint32_t bitmapW = 0, uint32_t bitmapH = 0);
+
+ void measureText(const char *text, uint32_t len, Font::Rect *bounds);
void setFontColor(float r, float g, float b, float a);
void getFontColor(float *r, float *g, float *b, float *a) const;
@@ -198,6 +226,9 @@
// Texture to cache glyph bitmaps
ObjectBaseRef<Allocation> mTextTexture;
void initTextTexture();
+ const uint8_t* getTextTextureData() const {
+ return (uint8_t*)mTextTexture->getPtr();
+ }
bool cacheBitmap(FT_Bitmap *bitmap, uint32_t *retOriginX, uint32_t *retOriginY);
const Type* getCacheTextureType() {
