mirror of
https://gitea.nishi.boats/pyrite-dev/milsko
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merge git PR #3 (round 2)
git-svn-id: http://svn2.nishi.boats/svn/milsko/trunk@469 b9cfdab3-6d41-4d17-bbe4-086880011989
This commit is contained in:
IoIxD
232
src/text/draw.c
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232
src/text/draw.c
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/* $Id$ */
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#include <Mw/Milsko.h>
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#ifdef HAS_FREETYPE
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#endif
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#define bitmap_FontWidth 7
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#define bitmap_FontHeight 14
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#define ft_FontWidth 14
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#define ft_FontHeight 14
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static void bitmap_MwDrawText(MwWidget handle, MwPoint* point, const char* text, int bold, int align, MwLLColor color) {
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int i = 0, x, y, sx, sy;
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int tw;
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int th;
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unsigned char* px;
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MwRect r;
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MwLLPixmap p;
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if(strlen(text) == 0) text = " ";
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tw = MwTextWidth(handle, text);
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th = MwTextHeight(handle, text);
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px = malloc(tw * th * 4);
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memset(px, 0, tw * th * 4);
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sx = 0;
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sy = 0;
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while(text[i] != 0) {
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int out;
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i += MwUTF8ToUTF32(text + i, &out);
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if(out >= 0x80) out = 0;
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if(out == '\n') {
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sx = 0;
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sy += bitmap_FontHeight;
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} else {
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for(y = 0; y < bitmap_FontHeight; y++) {
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for(x = 0; x < bitmap_FontWidth; x++) {
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unsigned char* ppx = &px[((sy + y) * tw + sx + x) * 4];
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if((bold ? MwBoldFontData : MwFontData)[out].data[y] & (1 << ((bitmap_FontWidth - 1) - x))) {
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ppx[0] = color->red;
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ppx[1] = color->green;
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ppx[2] = color->blue;
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ppx[3] = 255;
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} else {
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ppx[0] = 0;
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ppx[1] = 0;
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ppx[2] = 0;
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ppx[3] = 0;
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}
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}
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}
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sx += bitmap_FontWidth;
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}
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}
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p = MwLoadRaw(handle, px, tw, th);
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r.x = point->x;
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r.y = point->y - th / 2;
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r.width = tw;
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r.height = th;
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if(align == MwALIGNMENT_CENTER) {
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r.x -= tw / 2;
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} else if(align == MwALIGNMENT_END) {
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r.x -= tw;
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}
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MwLLDrawPixmap(handle->lowlevel, &r, p);
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MwLLDestroyPixmap(p);
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free(px);
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}
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#ifdef HAS_FREETYPE
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static void ft_MwDrawText(MwWidget handle, MwPoint* point, const char* text, int bold, int align, MwLLColor color) {
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FT_Error err;
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FT_Error (*_FT_Load_Char)(FT_Face face,
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FT_ULong char_code,
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FT_Int32 load_flags);
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FT_Error (*_FT_Set_Pixel_Sizes)(FT_Face face,
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FT_UInt pixel_width,
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FT_UInt pixel_height);
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MwLL l = handle->lowlevel;
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int i = 0, x, y, sx, sy;
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int tw;
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int th;
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unsigned char* px;
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MwRect r;
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MwLLPixmap p;
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if(strlen(text) == 0) text = " ";
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tw = MwTextWidth(handle, text);
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th = MwTextHeight(handle, text);
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// allocate 4x memory then what we need to account for spacing, italics, etc.
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px = malloc(tw * th * 16);
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memset(px, 0, tw * th * 16);
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sx = 0;
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sy = 0;
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FT_WITH_FUNC(l, FT_Set_Pixel_Sizes, {
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if((err = _FT_Set_Pixel_Sizes(l->ftFace, ft_FontWidth, ft_FontHeight)) != 0) {
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if(r.width == 0 || r.height == 0) {
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printf("failed to set pixel sizes");
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print_ft_error(l->ftLib, err);
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return;
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}
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}
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});
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FT_WITH_FUNC(l, FT_Load_Char, {
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while(text[i] != 0) {
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int out;
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i += MwUTF8ToUTF32(text + i, &out);
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if(out >= 0x80) out = 0;
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if((err = _FT_Load_Char(l->ftFace, out, FT_LOAD_RENDER)) != 0) {
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printf("[WARNING] Failed to render %c. ", out);
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print_ft_error(l->ftLib, err);
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continue;
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}
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FT_GlyphSlot glyph = l->ftFace->glyph;
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FT_Bitmap bitmap = glyph->bitmap;
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r.width = bitmap.width;
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r.height = bitmap.rows;
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if(sy == 0) {
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sy = r.height;
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}
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if(r.width == 0 || r.height == 0) {
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sx += ft_FontWidth;
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continue;
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}
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if(out == '\n') {
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sx = 0;
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sy += r.height;
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} else {
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// printf("%ld\n", (glyph->advance.x / r.width));
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int gsx = sx + glyph->bitmap_left;
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int gsy = (sy - glyph->bitmap_top);
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for(y = 0; y < r.height; y++) {
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for(x = 0; x < r.width; x++) {
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unsigned char* ppx = &px[((gsy + y) * tw + gsx + x) * 4];
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unsigned char gray = bitmap.buffer[(y * r.width) + x];
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ppx[0] = color->red - gray;
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ppx[1] = color->green - gray;
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ppx[2] = color->blue - gray;
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ppx[3] = gray;
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}
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}
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sx += r.width;
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// sx += glyph->advance.x;
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}
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}
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});
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p = MwLoadRaw(handle, px, tw, th);
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r.x = point->x;
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r.y = point->y - th / 2;
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r.width = tw;
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r.height = th;
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if(align == MwALIGNMENT_CENTER) {
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r.x -= tw / 2;
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} else if(align == MwALIGNMENT_END) {
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r.x -= tw;
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}
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MwLLDrawPixmap(handle->lowlevel, &r, p);
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MwLLDestroyPixmap(p);
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free(px);
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}
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#endif
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void MwDrawText(MwWidget handle, MwPoint* point, const char* text, int bold, int align, MwLLColor color) {
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bitmap_MwDrawText(handle, point, text, bold, align, color);
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}
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int MwTextWidth(MwWidget handle, const char* text) {
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(void)handle;
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/* TODO: check newline */
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#ifdef HAS_FREETYPE
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if(handle->lowlevel->ftLib != NULL) {
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return strlen(text) * ft_FontWidth;
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} else {
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#endif
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return strlen(text) * bitmap_FontWidth;
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#ifdef HAS_FREETYPE
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}
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#endif
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}
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int MwTextHeight(MwWidget handle, const char* text) {
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int c = 1;
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int i = 0;
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(void)handle;
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(void)text;
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while(text[i] != 0) {
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int out;
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i += MwUTF8ToUTF32(text + i, &out);
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if(out == '\n') c++;
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}
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#ifdef HAS_FREETYPE
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if(handle->lowlevel->ftLib != NULL) {
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return ft_FontHeight * c;
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} else {
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#endif
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return bitmap_FontHeight * c;
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#ifdef HAS_FREETYPE
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}
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#endif
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}
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