diff options
Diffstat (limited to 'src/text.c')
| -rw-r--r-- | src/text.c | 240 |
1 files changed, 120 insertions, 120 deletions
@@ -14,117 +14,117 @@ void unloadGlyphInfo( GlyphInfo* glyph ) { static int DrawTextBoxed( Font font, const char* text, Rectangle rec, float fontSize, float spacing, bool wordWrap, Color* tints, int tintCount, Color* backTints, int backTintCount ) { - int length = TextLength(text); // Total length in bytes of the text, scanned by codepoints in loop + int length = TextLength(text); // Total length in bytes of the text, scanned by codepoints in loop - float textOffsetY = 0; // Offset between lines (on line break '\n') - float textOffsetX = 0.0f; // Offset X to next character to draw + float textOffsetY = 0; // Offset between lines (on line break '\n') + float textOffsetX = 0.0f; // Offset X to next character to draw - float scaleFactor = fontSize/(float)font.baseSize; // Character rectangle scaling factor + float scaleFactor = fontSize/(float)font.baseSize; // Character rectangle scaling factor - // Word/character wrapping mechanism variables - enum { MEASURE_STATE = 0, DRAW_STATE = 1 }; - int state = wordWrap ? MEASURE_STATE : DRAW_STATE; + // Word/character wrapping mechanism variables + enum { MEASURE_STATE = 0, DRAW_STATE = 1 }; + int state = wordWrap ? MEASURE_STATE : DRAW_STATE; - int startLine = -1; // Index where to begin drawing (where a line begins) - int endLine = -1; // Index where to stop drawing (where a line ends) - int lastk = -1; // Holds last value of the character position + int startLine = -1; // Index where to begin drawing (where a line begins) + int endLine = -1; // Index where to stop drawing (where a line ends) + int lastk = -1; // Holds last value of the character position Color tint = BLACK; Color backTint = BLANK; Vector2 mousePos = GetMousePosition(); int mouseChar = -1; - for ( int i = 0, k = 0; i < length; i++, k++) - { + for ( int i = 0, k = 0; i < length; i++, k++) + { if ( i < tintCount ) { tint = tints[i]; } if ( i < backTintCount ) { backTint = backTints[i]; } - // Get next codepoint from byte string and glyph index in font - int codepointByteCount = 0; - int codepoint = GetCodepoint(&text[i], &codepointByteCount); - int index = GetGlyphIndex(font, codepoint); - - // NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f) - // but we need to draw all of the bad bytes using the '?' symbol moving one byte - if (codepoint == 0x3f) codepointByteCount = 1; - i += (codepointByteCount - 1); - - float glyphWidth = 0; - if (codepoint != '\n') - { - glyphWidth = (font.glyphs[index].advanceX == 0) ? font.recs[index].width*scaleFactor : font.glyphs[index].advanceX*scaleFactor; - - if (i + 1 < length) glyphWidth = glyphWidth + spacing; - } - - // NOTE: When wordWrap is ON we first measure how much of the text we can draw before going outside of the rec container - // We store this info in startLine and endLine, then we change states, draw the text between those two variables - // and change states again and again recursively until the end of the text (or until we get outside of the container). - // When wordWrap is OFF we don't need the measure state so we go to the drawing state immediately - // and begin drawing on the next line before we can get outside the container. - if (state == MEASURE_STATE) - { - // TODO: There are multiple types of spaces in UNICODE, maybe it's a good idea to add support for more - // Ref: http://jkorpela.fi/chars/spaces.html - if ((codepoint == ' ') || (codepoint == '\t') || (codepoint == '\n')) endLine = i; - - if ((textOffsetX + glyphWidth) > rec.width) - { - endLine = (endLine < 1)? i : endLine; - if (i == endLine) endLine -= codepointByteCount; - if ((startLine + codepointByteCount) == endLine) endLine = (i - codepointByteCount); - - state = !state; - } - else if ((i + 1) == length) - { - endLine = i; - state = !state; - } - else if (codepoint == '\n') state = !state; - - if (state == DRAW_STATE) - { - textOffsetX = 0; - i = startLine; - glyphWidth = 0; - - // Save character position when we switch states - int tmp = lastk; - lastk = k - 1; - k = tmp; - } - } - else - { - if (codepoint == '\n') - { - if (!wordWrap) - { - textOffsetY += (font.baseSize + font.baseSize/2)*scaleFactor; - textOffsetX = 0; - } - } - else - { - if (!wordWrap && ((textOffsetX + glyphWidth) > rec.width)) - { - textOffsetY += (font.baseSize + font.baseSize/2)*scaleFactor; - textOffsetX = 0; - } - - // When text overflows rectangle height limit, just stop drawing - if ((textOffsetY + font.baseSize*scaleFactor) > rec.height) break; - - // Draw selection background - // bool isGlyphSelected = false; - // if ((selectStart >= 0) && (k >= selectStart) && (k < (selectStart + selectLength))) - // { - // DrawRectangleRec((Rectangle){ rec.x + textOffsetX - 1, rec.y + textOffsetY, glyphWidth, (float)font.baseSize*scaleFactor }, selectBackTint); - // isGlyphSelected = true; - // } + // Get next codepoint from byte string and glyph index in font + int codepointByteCount = 0; + int codepoint = GetCodepoint(&text[i], &codepointByteCount); + int index = GetGlyphIndex(font, codepoint); + + // NOTE: Normally we exit the decoding sequence as soon as a bad byte is found (and return 0x3f) + // but we need to draw all of the bad bytes using the '?' symbol moving one byte + if (codepoint == 0x3f) codepointByteCount = 1; + i += (codepointByteCount - 1); + + float glyphWidth = 0; + if (codepoint != '\n') + { + glyphWidth = (font.glyphs[index].advanceX == 0) ? font.recs[index].width*scaleFactor : font.glyphs[index].advanceX*scaleFactor; + + if (i + 1 < length) glyphWidth = glyphWidth + spacing; + } + + // NOTE: When wordWrap is ON we first measure how much of the text we can draw before going outside of the rec container + // We store this info in startLine and endLine, then we change states, draw the text between those two variables + // and change states again and again recursively until the end of the text (or until we get outside of the container). + // When wordWrap is OFF we don't need the measure state so we go to the drawing state immediately + // and begin drawing on the next line before we can get outside the container. + if (state == MEASURE_STATE) + { + // TODO: There are multiple types of spaces in UNICODE, maybe it's a good idea to add support for more + // Ref: http://jkorpela.fi/chars/spaces.html + if ((codepoint == ' ') || (codepoint == '\t') || (codepoint == '\n')) endLine = i; + + if ((textOffsetX + glyphWidth) > rec.width) + { + endLine = (endLine < 1)? i : endLine; + if (i == endLine) endLine -= codepointByteCount; + if ((startLine + codepointByteCount) == endLine) endLine = (i - codepointByteCount); + + state = !state; + } + else if ((i + 1) == length) + { + endLine = i; + state = !state; + } + else if (codepoint == '\n') state = !state; + + if (state == DRAW_STATE) + { + textOffsetX = 0; + i = startLine; + glyphWidth = 0; + + // Save character position when we switch states + int tmp = lastk; + lastk = k - 1; + k = tmp; + } + } + else + { + if (codepoint == '\n') + { + if (!wordWrap) + { + textOffsetY += (font.baseSize + font.baseSize/2)*scaleFactor; + textOffsetX = 0; + } + } + else + { + if (!wordWrap && ((textOffsetX + glyphWidth) > rec.width)) + { + textOffsetY += (font.baseSize + font.baseSize/2)*scaleFactor; + textOffsetX = 0; + } + + // When text overflows rectangle height limit, just stop drawing + if ((textOffsetY + font.baseSize*scaleFactor) > rec.height) break; + + // Draw selection background + // bool isGlyphSelected = false; + // if ((selectStart >= 0) && (k >= selectStart) && (k < (selectStart + selectLength))) + // { + // DrawRectangleRec((Rectangle){ rec.x + textOffsetX - 1, rec.y + textOffsetY, glyphWidth, (float)font.baseSize*scaleFactor }, selectBackTint); + // isGlyphSelected = true; + // } if ( CheckCollisionPointRec( mousePos, (Rectangle){ rec.x + textOffsetX - 1, rec.y + textOffsetY, glyphWidth, (float)font.baseSize*scaleFactor } ) ) { mouseChar = i; @@ -134,30 +134,30 @@ bool wordWrap, Color* tints, int tintCount, Color* backTints, int backTintCount DrawRectangleRec((Rectangle){ rec.x + textOffsetX - 1, rec.y + textOffsetY, glyphWidth, (float)font.baseSize*scaleFactor }, backTint); } - // Draw current character glyph - if ((codepoint != ' ') && (codepoint != '\t')) - { - // DrawTextCodepoint(font, codepoint, (Vector2){ rec.x + textOffsetX, rec.y + textOffsetY }, fontSize, isGlyphSelected? selectTint : tint); - DrawTextCodepoint( font, codepoint, (Vector2){ rec.x + textOffsetX, rec.y + textOffsetY }, fontSize, tint ); - } - } - - if (wordWrap && (i == endLine)) - { - textOffsetY += (font.baseSize + font.baseSize/2)*scaleFactor; - textOffsetX = 0; - startLine = endLine; - endLine = -1; - glyphWidth = 0; - // selectStart += lastk - k; - k = lastk; - - state = !state; - } - } - - if ((textOffsetX != 0) || (codepoint != ' ')) textOffsetX += glyphWidth; // avoid leading spaces - } + // Draw current character glyph + if ((codepoint != ' ') && (codepoint != '\t')) + { + // DrawTextCodepoint(font, codepoint, (Vector2){ rec.x + textOffsetX, rec.y + textOffsetY }, fontSize, isGlyphSelected? selectTint : tint); + DrawTextCodepoint( font, codepoint, (Vector2){ rec.x + textOffsetX, rec.y + textOffsetY }, fontSize, tint ); + } + } + + if (wordWrap && (i == endLine)) + { + textOffsetY += (font.baseSize + font.baseSize/2)*scaleFactor; + textOffsetX = 0; + startLine = endLine; + endLine = -1; + glyphWidth = 0; + // selectStart += lastk - k; + k = lastk; + + state = !state; + } + } + + if ((textOffsetX != 0) || (codepoint != ' ')) textOffsetX += glyphWidth; // avoid leading spaces + } return mouseChar; } |