mirror of
https://github.com/GRRLIB/GRRLIB.git
synced 2024-11-22 23:12:21 +00:00
Update GRRLIB_ttf.c
Changed functions ordering (called after calling) Code optimizations. Change malloc strategy for PrintfTTF and WidthTTF.
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nebiun
parent
aa41f4f814
commit
ff74ddad90
1 changed files with 111 additions and 117 deletions
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@ -27,10 +27,33 @@ THE SOFTWARE.
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#include FT_FREETYPE_H
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static FT_Library ftLibrary; /**< A handle to a FreeType library instance. */
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static wchar_t *_utf32 = NULL;
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static u32 _utf32_len = 0;
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// Static function prototypes
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static void DrawBitmap(FT_Bitmap *bitmap, int offset, int top, const u8 cR, const u8 cG, const u8 cB);
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/**
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* Draw a character on the screen.
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* @param bitmap Bitmap to draw.
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* @param offset x-coordinate offset.
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* @param top y-coordinate.
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* @param cR Red component of the colour.
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* @param cG Green component of the colour.
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* @param cB Blue component of the colour.
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*/
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static inline void DrawBitmap(FT_Bitmap *bitmap, int offset, int top, const u8 cR, const u8 cG, const u8 cB) {
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FT_Int i, j, p, q;
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FT_Int x_max = offset + bitmap->width;
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FT_Int y_max = top + bitmap->rows;
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for ( i = offset, p = 0; i < x_max; i++, p++ ) {
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for ( j = top, q = 0; j < y_max; j++, q++ ) {
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GX_Begin(GX_POINTS, GX_VTXFMT0, 1);
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GX_Position3f32(i, j, 0);
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GX_Color4u8(cR, cG, cB,
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bitmap->buffer[ q * bitmap->width + p ]);
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GX_End();
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}
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}
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}
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/**
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* Initialize FreeType library.
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@ -48,6 +71,11 @@ int GRRLIB_InitTTF () {
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*/
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void GRRLIB_ExitTTF (void) {
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FT_Done_FreeType(ftLibrary);
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if(_utf32 != NULL) {
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free(_utf32);
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_utf32 = NULL;
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_utf32_len = 0;
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}
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}
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/**
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@ -87,44 +115,13 @@ void GRRLIB_FreeTTF (GRRLIB_ttfFont *myFont) {
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}
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/**
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* Print function for TTF font.
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* @param x Specifies the x-coordinate of the upper-left corner of the text.
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* @param y Specifies the y-coordinate of the upper-left corner of the text.
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* @param myFont A TTF.
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* @param string Text to draw.
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* @param fontSize Size of the font.
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* @param color Text color in RGBA format.
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* Common code for GRRLIB_PrintfTTFW() and GRRLIB_WidthTTFW()
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*/
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void GRRLIB_PrintfTTF(int x, int y, GRRLIB_ttfFont *myFont, const char *string, unsigned int fontSize, const u32 color) {
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if (myFont == NULL || string == NULL) {
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return;
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}
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size_t length = strlen(string) + 1;
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wchar_t *utf32 = (wchar_t*)malloc(length * sizeof(wchar_t));
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if (utf32 != NULL) {
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length = mbstowcs(utf32, string, length);
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if (length > 0) {
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utf32[length] = L'\0';
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GRRLIB_PrintfTTFW(x, y, myFont, utf32, fontSize, color);
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}
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free(utf32);
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}
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}
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/**
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* Print function for TTF font.
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* @author wplaat and DrTwox
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* @param x Specifies the x-coordinate of the upper-left corner of the text.
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* @param y Specifies the y-coordinate of the upper-left corner of the text.
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* @param myFont A TTF.
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* @param utf32 Text to draw.
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* @param fontSize Size of the font.
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* @param color Text color in RGBA format.
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*/
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void GRRLIB_PrintfTTFW(int x, int y, GRRLIB_ttfFont *myFont, const wchar_t *utf32, unsigned int fontSize, const u32 color) {
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static u32 _PrintfTTFW(int x, int y, GRRLIB_ttfFont *myFont, const wchar_t *utf32, unsigned int fontSize,
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const u32 color, bool noprint)
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{
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if (myFont == NULL || utf32 == NULL) {
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return;
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return 0;
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}
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FT_Face Face = (FT_Face)myFont->face;
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@ -152,63 +149,32 @@ void GRRLIB_PrintfTTFW(int x, int y, GRRLIB_ttfFont *myFont, const wchar_t *utf3
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if (FT_Load_Glyph(myFont->face, glyphIndex, FT_LOAD_RENDER) != 0) {
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continue;
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}
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DrawBitmap(&slot->bitmap,
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penX + slot->bitmap_left + x,
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penY - slot->bitmap_top + y,
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cR, cG, cB);
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if(!noprint) {
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DrawBitmap(&slot->bitmap,
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penX + slot->bitmap_left + x,
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penY - slot->bitmap_top + y,
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cR, cG, cB);
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}
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penX += slot->advance.x >> 6;
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previousGlyph = glyphIndex;
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}
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}
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return penX;
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}
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/**
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* Draw a character on the screen.
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* @param bitmap Bitmap to draw.
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* @param offset x-coordinate offset.
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* @param top y-coordinate.
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* @param cR Red component of the colour.
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* @param cG Green component of the colour.
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* @param cB Blue component of the colour.
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*/
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static void DrawBitmap(FT_Bitmap *bitmap, int offset, int top, const u8 cR, const u8 cG, const u8 cB) {
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FT_Int i, j, p, q;
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FT_Int x_max = offset + bitmap->width;
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FT_Int y_max = top + bitmap->rows;
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for ( i = offset, p = 0; i < x_max; i++, p++ ) {
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for ( j = top, q = 0; j < y_max; j++, q++ ) {
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GX_Begin(GX_POINTS, GX_VTXFMT0, 1);
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GX_Position3f32(i, j, 0);
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GX_Color4u8(cR, cG, cB,
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bitmap->buffer[ q * bitmap->width + p ]);
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GX_End();
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}
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}
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}
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/**
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* Get the width of a text in pixel.
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* Print function for TTF font.
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* @author wplaat and DrTwox
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* @param x Specifies the x-coordinate of the upper-left corner of the text.
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* @param y Specifies the y-coordinate of the upper-left corner of the text.
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* @param myFont A TTF.
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* @param string The text to check.
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* @param fontSize The size of the font.
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* @return The width of a text in pixel.
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* @param utf32 Text to draw.
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* @param fontSize Size of the font.
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* @param color Text color in RGBA format.
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*/
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u32 GRRLIB_WidthTTF(GRRLIB_ttfFont *myFont, const char *string, unsigned int fontSize) {
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if (myFont == NULL || string == NULL) {
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return 0;
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}
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u32 penX;
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size_t length = strlen(string) + 1;
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wchar_t *utf32 = (wchar_t*)malloc(length * sizeof(wchar_t));
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length = mbstowcs(utf32, string, length);
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utf32[length] = L'\0';
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penX = GRRLIB_WidthTTFW(myFont, utf32, fontSize);
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free(utf32);
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return penX;
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void GRRLIB_PrintfTTFW(int x, int y, GRRLIB_ttfFont *myFont, const wchar_t *utf32, unsigned int fontSize, const u32 color)
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{
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_PrintfTTFW(x, y, myFont, utf32, fontSize, color, false);
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}
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/**
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@ -218,35 +184,63 @@ u32 GRRLIB_WidthTTF(GRRLIB_ttfFont *myFont, const char *string, unsigned int fon
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* @param fontSize The size of the font.
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* @return The width of a text in pixel.
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*/
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u32 GRRLIB_WidthTTFW(GRRLIB_ttfFont *myFont, const wchar_t *utf32, unsigned int fontSize) {
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if (myFont == NULL || utf32 == NULL) {
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u32 GRRLIB_WidthTTFW(GRRLIB_ttfFont *myFont, const wchar_t *utf32, unsigned int fontSize)
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{
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return _PrintfTTFW(0, 0, myFont, utf32, fontSize, 0x00000000, true);
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}
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/**
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* Common code for GRRLIB_PrintfTTF() and GRRLIB_WidthTTF()
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*/
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static u32 _PrintfTTF(int x, int y, GRRLIB_ttfFont *myFont, const char *string, unsigned int fontSize,
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const u32 color, bool noprint)
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{
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if (myFont == NULL || string == NULL) {
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return 0;
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}
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FT_Face Face = (FT_Face)myFont->face;
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u32 penX = 0;
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FT_UInt glyphIndex;
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FT_UInt previousGlyph = 0;
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if (FT_Set_Pixel_Sizes(myFont->face, 0, fontSize) != 0) {
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FT_Set_Pixel_Sizes(myFont->face, 0, 12);
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}
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while(*utf32) {
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glyphIndex = FT_Get_Char_Index(myFont->face, *utf32++);
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if (myFont->kerning && previousGlyph && glyphIndex) {
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FT_Vector delta;
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FT_Get_Kerning(Face, previousGlyph, glyphIndex, FT_KERNING_DEFAULT, &delta);
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penX += delta.x >> 6;
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}
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if (FT_Load_Glyph(Face, glyphIndex, FT_LOAD_RENDER) != 0) {
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continue;
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}
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penX += Face->glyph->advance.x >> 6;
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previousGlyph = glyphIndex;
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}
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return penX;
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u32 penX = 0;
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size_t length = strlen(string) + 1;
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if(length > _utf32_len) {
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if(_utf32 != NULL) {
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free(_utf32);
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_utf32 = NULL;
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_utf32_len = 0;
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}
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_utf32 = (wchar_t*)malloc(length * sizeof(wchar_t));
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_utf32_len = length;
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}
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if (_utf32 != NULL) {
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length = mbstowcs(_utf32, string, length);
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if (length > 0) {
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*(_utf32+length) = L'\0';
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penX = _PrintfTTFW(x, y, myFont, _utf32, fontSize, color, noprint);
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}
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}
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return penX;
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}
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/**
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* Print function for TTF font.
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* @param x Specifies the x-coordinate of the upper-left corner of the text.
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* @param y Specifies the y-coordinate of the upper-left corner of the text.
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* @param myFont A TTF.
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* @param string Text to draw.
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* @param fontSize Size of the font.
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* @param color Text color in RGBA format.
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*/
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void GRRLIB_PrintfTTF(int x, int y, GRRLIB_ttfFont *myFont, const char *string, unsigned int fontSize, const u32 color)
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{
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_PrintfTTF(x, y, myFont, string, fontSize, color, false);
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}
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/**
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* Get the width of a text in pixel.
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* @param myFont A TTF.
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* @param string The text to check.
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* @param fontSize The size of the font.
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* @return The width of a text in pixel.
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*/
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u32 GRRLIB_WidthTTF(GRRLIB_ttfFont *myFont, const char *string, unsigned int fontSize)
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{
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return _PrintfTTF(0, 0, myFont, string, fontSize, 0x00000000, true);
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}
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