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https://gitlab.com/Theopse/fbi-i18n-zh.git
synced 2025-04-06 03:58:02 +08:00
Clean up line wrapping logic.
This commit is contained in:
Steven Smith
parent
1d52cba6c4
commit
25105346ab
@ -488,74 +488,117 @@ float screen_get_font_height(float scaleY) {
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return scaleY * fontGetInfo()->lineFeed;
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}
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static void screen_get_string_size_internal(float* width, float* height, const char* text, float scaleX, float scaleY, bool oneLine, bool wrap, float wrapWidth) {
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#define MAX_LINES 64
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inline static void screen_wrap_string_finish_line(float* w, float* h, float* lw, float* lh, u32* line, u32* linePos, u32* lastAlignPos,
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u32* lines, float* lineWidths, float* lineHeights,
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u32 maxLines) {
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if(*lw > *w) {
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*w = *lw;
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}
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*h += *lh;
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if(*line < maxLines) {
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if(lines != NULL) {
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lines[*line] = *linePos;
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}
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if(lineWidths != NULL) {
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lineWidths[*line] = *lw;
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}
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if(lineHeights != NULL) {
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lineHeights[*line] = *lh;
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}
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(*line)++;
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}
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*lw = 0;
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*lh = 0;
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*linePos = 0;
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*lastAlignPos = 0;
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}
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static void screen_wrap_string(u32* lines, float* lineWidths, float* lineHeights, u32* numLines, float* totalWidth, float* totalHeight,
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const char* text, u32 maxLines, float maxWidth, float scaleX, float scaleY, bool wordWrap) {
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scaleX *= font_scale;
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scaleY *= font_scale;
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float w = 0;
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float h = 0;
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float lineWidth = 0;
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if(text != NULL) {
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h = scaleY * fontGetInfo()->lineFeed;
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u32 line = 0;
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float lw = 0;
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float lh = 0;
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u32 linePos = 0;
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u32 lastAlignPos = 0;
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const uint8_t* p = (const uint8_t*) text;
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const uint8_t* lastAlign = p;
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u32 code = 0;
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ssize_t units = -1;
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while(*p && (units = decode_utf8(&code, p)) != -1 && code > 0) {
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p += units;
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const uint8_t* p = (const uint8_t*) text;
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u32 code = 0;
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ssize_t units = -1;
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if(code == '\n' || (wrap && lineWidth + scaleX * fontGetCharWidthInfo(fontGlyphIndexFromCodePoint(code))->charWidth >= wrapWidth)) {
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lastAlign = p;
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while(*p && (units = decode_utf8(&code, p)) != -1 && code > 0) {
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p += units;
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if(lineWidth > w) {
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w = lineWidth;
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}
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float charWidth = scaleX * fontGetCharWidthInfo(fontGlyphIndexFromCodePoint(code))->charWidth;
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lineWidth = 0;
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if(oneLine) {
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break;
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}
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h += scaleY * fontGetInfo()->lineFeed;
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if(code == '\n' || (wordWrap && lw + charWidth >= maxWidth)) {
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if(code == '\n') {
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linePos++;
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lh = scaleY * fontGetInfo()->lineFeed;
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}
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if(code != '\n') {
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u32 num = 1;
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if(code == '\t') {
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code = ' ';
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num = 4 - (p - units - lastAlign) % 4;
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screen_wrap_string_finish_line(&w, &h, &lw, &lh, &line, &linePos, &lastAlignPos,
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lines, lineWidths, lineHeights,
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maxLines);
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}
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lastAlign = p;
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}
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if(code != '\n') {
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u32 num = 1;
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if(code == '\t') {
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code = ' ';
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num = 4 - (linePos - lastAlignPos) % 4;
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lineWidth += (scaleX * fontGetCharWidthInfo(fontGlyphIndexFromCodePoint(code))->charWidth) * num;
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lastAlignPos = linePos;
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}
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lw += charWidth * num;
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lh = scaleY * fontGetInfo()->lineFeed;
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linePos++;
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}
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}
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if(width) {
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*width = lineWidth > w ? lineWidth : w;
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if(linePos > 0) {
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screen_wrap_string_finish_line(&w, &h, &lw, &lh, &line, &linePos, &lastAlignPos,
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lines, lineWidths, lineHeights,
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maxLines);
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}
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if(height) {
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*height = h;
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if(numLines != NULL) {
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*numLines = line;
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}
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if(totalWidth != NULL) {
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*totalWidth = w;
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}
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if(totalHeight != NULL) {
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*totalHeight = h;
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}
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}
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void screen_get_string_size(float* width, float* height, const char* text, float scaleX, float scaleY) {
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screen_get_string_size_internal(width, height, text, scaleX, scaleY, false, false, 0);
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screen_wrap_string(NULL, NULL, NULL, NULL, width, height, text, 0, 0, scaleX, scaleY, false);
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}
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void screen_get_string_size_wrap(float* width, float* height, const char* text, float scaleX, float scaleY, float wrapWidth) {
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screen_get_string_size_internal(width, height, text, scaleX, scaleY, false, true, wrapWidth);
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screen_wrap_string(NULL, NULL, NULL, NULL, width, height, text, 0, wrapWidth, scaleX, scaleY, true);
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}
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static void screen_draw_string_internal(const char* text, float x, float y, float scaleX, float scaleY, u32 colorId, bool centerLines, bool wrap, float wrapX) {
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// Note: Do not just multiply scaleX and scaleY by font_scale, as they would then be double-scaled when passed into screen_get_string_size_internal.
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if(text == NULL) {
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return;
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}
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@ -576,62 +619,65 @@ static void screen_draw_string_internal(const char* text, float x, float y, floa
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screen_set_blend(blendColor, true, true);
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float stringWidth;
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screen_get_string_size_internal(&stringWidth, NULL, text, scaleX, scaleY, false, wrap, wrapX - x);
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float lineWidth;
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screen_get_string_size_internal(&lineWidth, NULL, text, scaleX, scaleY, true, wrap, wrapX - x);
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u32 lines[MAX_LINES];
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float lineWidths[MAX_LINES];
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float lineHeights[MAX_LINES];
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u32 numLines = 0;
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float totalWidth = 0;
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float totalHeight = 0;
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screen_wrap_string(lines, lineWidths, lineHeights, &numLines, &totalWidth, &totalHeight, text, MAX_LINES, wrapX - x, scaleX, scaleY, wrap);
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float currX = x;
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if(centerLines) {
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currX += (stringWidth - lineWidth) / 2;
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}
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float currY = y;
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u32 linePos = 0;
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u32 lastAlignPos = 0;
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int lastSheet = -1;
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const uint8_t* p = (const uint8_t*) text;
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const uint8_t* lastAlign = p;
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u32 code = 0;
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ssize_t units = -1;
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while(*p && (units = decode_utf8(&code, p)) != -1 && code > 0) {
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p += units;
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if(code == '\n' || (wrap && currX + scaleX * font_scale * fontGetCharWidthInfo(fontGlyphIndexFromCodePoint(code))->charWidth >= wrapX)) {
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lastAlign = p;
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screen_get_string_size_internal(&lineWidth, NULL, (const char*) p, scaleX, scaleY, true, wrap, wrapX - x);
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currX = x;
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if(centerLines) {
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currX += (stringWidth - lineWidth) / 2;
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}
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y += scaleY * font_scale * fontGetInfo()->lineFeed;
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for(u32 i = 0; i < numLines; i++) {
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currX = x;
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if(centerLines) {
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currX += (totalWidth - lineWidths[i]) / 2;
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}
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if(code != '\n') {
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u32 num = 1;
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if(code == '\t') {
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code = ' ';
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num = 4 - (p - units - lastAlign) % 4;
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while(linePos < lines[i] && *p && (units = decode_utf8(&code, p)) != -1 && code > 0) {
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p += units;
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lastAlign = p;
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if(code != '\n') {
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u32 num = 1;
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if(code == '\t') {
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code = ' ';
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num = 4 - (linePos - lastAlignPos) % 4;
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lastAlignPos = linePos;
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}
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fontGlyphPos_s data;
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fontCalcGlyphPos(&data, fontGlyphIndexFromCodePoint(code), GLYPH_POS_CALC_VTXCOORD, scaleX * font_scale, scaleY * font_scale);
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if(data.sheetIndex != lastSheet) {
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lastSheet = data.sheetIndex;
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C3D_TexBind(0, &glyph_sheets[lastSheet]);
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}
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for(u32 j = 0; j < num; j++) {
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screen_draw_quad(currX + data.vtxcoord.left, currY + data.vtxcoord.top, currX + data.vtxcoord.right, currY + data.vtxcoord.bottom, data.texcoord.left, data.texcoord.bottom, data.texcoord.right, data.texcoord.top);
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currX += data.xAdvance;
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}
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}
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fontGlyphPos_s data;
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fontCalcGlyphPos(&data, fontGlyphIndexFromCodePoint(code), GLYPH_POS_CALC_VTXCOORD, scaleX * font_scale, scaleY * font_scale);
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if(data.sheetIndex != lastSheet) {
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lastSheet = data.sheetIndex;
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C3D_TexBind(0, &glyph_sheets[lastSheet]);
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}
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for(u32 i = 0; i < num; i++) {
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screen_draw_quad(currX + data.vtxcoord.left, y + data.vtxcoord.top, currX + data.vtxcoord.right, y + data.vtxcoord.bottom, data.texcoord.left, data.texcoord.bottom, data.texcoord.right, data.texcoord.top);
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currX += data.xAdvance;
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}
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linePos++;
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}
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currY += lineHeights[i];
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linePos = 0;
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lastAlignPos = 0;
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}
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screen_set_blend(0, false, false);
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