mirror of https://github.com/FreeRDP/FreeRDP
754 lines
13 KiB
C
754 lines
13 KiB
C
/**
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* RdTk: Remote Desktop Toolkit
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*
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* Copyright 2014 Marc-Andre Moreau <marcandre.moreau@gmail.com>
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <errno.h>
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#include <winpr/wtypes.h>
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#include <winpr/crt.h>
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#include <winpr/path.h>
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#include <winpr/print.h>
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#include "rdtk_engine.h"
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#include "rdtk_resources.h"
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#include "rdtk_surface.h"
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#include "rdtk_font.h"
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static int rdtk_font_draw_glyph(rdtkSurface* surface, int nXDst, int nYDst, rdtkFont* font,
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rdtkGlyph* glyph)
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{
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int x, y;
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int nXSrc;
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int nYSrc;
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int nWidth;
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int nHeight;
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int nSrcStep;
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int nDstStep;
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BYTE* pSrcData;
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BYTE* pSrcPixel;
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BYTE* pDstData;
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BYTE* pDstPixel;
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BYTE A, R, G, B;
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nXDst += glyph->offsetX;
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nYDst += glyph->offsetY;
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nXSrc = glyph->rectX;
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nYSrc = glyph->rectY;
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nWidth = glyph->rectWidth;
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nHeight = glyph->rectHeight;
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nSrcStep = font->image->scanline;
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pSrcData = font->image->data;
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pDstData = surface->data;
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nDstStep = surface->scanline;
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for (y = 0; y < nHeight; y++)
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{
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pSrcPixel = &pSrcData[((nYSrc + y) * nSrcStep) + (nXSrc * 4)];
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pDstPixel = &pDstData[((nYDst + y) * nDstStep) + (nXDst * 4)];
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for (x = 0; x < nWidth; x++)
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{
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B = pSrcPixel[0];
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G = pSrcPixel[1];
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R = pSrcPixel[2];
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A = pSrcPixel[3];
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pSrcPixel += 4;
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if (1)
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{
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/* tint black */
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R = 255 - R;
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G = 255 - G;
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B = 255 - B;
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}
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if (A == 255)
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{
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pDstPixel[0] = B;
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pDstPixel[1] = G;
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pDstPixel[2] = R;
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}
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else
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{
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R = (R * A) / 255;
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G = (G * A) / 255;
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B = (B * A) / 255;
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pDstPixel[0] = B + (pDstPixel[0] * (255 - A) + (255 / 2)) / 255;
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pDstPixel[1] = G + (pDstPixel[1] * (255 - A) + (255 / 2)) / 255;
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pDstPixel[2] = R + (pDstPixel[2] * (255 - A) + (255 / 2)) / 255;
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}
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pDstPixel[3] = 0xFF;
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pDstPixel += 4;
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}
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}
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return 1;
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}
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int rdtk_font_draw_text(rdtkSurface* surface, int nXDst, int nYDst, rdtkFont* font,
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const char* text)
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{
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size_t index;
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size_t length;
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rdtkGlyph* glyph;
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font = surface->engine->font;
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length = strlen(text);
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for (index = 0; index < length; index++)
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{
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glyph = &font->glyphs[text[index] - 32];
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rdtk_font_draw_glyph(surface, nXDst, nYDst, font, glyph);
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nXDst += (glyph->width + 1);
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}
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return 1;
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}
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int rdtk_font_text_draw_size(rdtkFont* font, int* width, int* height, const char* text)
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{
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size_t index;
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size_t length;
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int glyphIndex;
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rdtkGlyph* glyph;
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*width = 0;
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*height = 0;
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length = strlen(text);
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for (index = 0; index < length; index++)
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{
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glyphIndex = text[index] - 32;
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if (glyphIndex < font->glyphCount)
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{
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glyph = &font->glyphs[glyphIndex];
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*width += (glyph->width + 1);
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}
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}
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*height = font->height + 2;
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return 1;
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}
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static char* rdtk_font_load_descriptor_file(const char* filename, int* pSize)
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{
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BYTE* buffer;
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FILE* fp = NULL;
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size_t readSize;
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size_t fileSize;
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fp = fopen(filename, "r");
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if (!fp)
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return NULL;
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_fseeki64(fp, 0, SEEK_END);
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fileSize = _ftelli64(fp);
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_fseeki64(fp, 0, SEEK_SET);
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if (fileSize < 1)
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{
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fclose(fp);
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return NULL;
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}
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buffer = (BYTE*) malloc(fileSize + 2);
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if (!buffer)
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{
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fclose(fp);
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return NULL;
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}
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readSize = fread(buffer, fileSize, 1, fp);
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if (!readSize)
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{
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if (!ferror(fp))
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readSize = fileSize;
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}
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fclose(fp);
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if (readSize < 1)
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{
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free(buffer);
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return NULL;
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}
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buffer[fileSize] = '\0';
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buffer[fileSize + 1] = '\0';
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*pSize = (int) fileSize;
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return (char*) buffer;
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}
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static int rdtk_font_convert_descriptor_code_to_utf8(const char* str, BYTE* utf8)
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{
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size_t len = strlen(str);
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*((UINT32*) utf8) = 0;
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if (len < 1)
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return 1;
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if (len == 1)
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{
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if ((str[0] > 31) && (str[0] < 127))
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{
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utf8[0] = str[0];
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}
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}
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else
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{
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if (str[0] == '&')
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{
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const char* acc = &str[1];
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if (strcmp(acc, "quot;") == 0)
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utf8[0] = '"';
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else if (strcmp(acc, "amp;") == 0)
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utf8[0] = '&';
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else if (strcmp(acc, "lt;") == 0)
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utf8[0] = '<';
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else if (strcmp(acc, "gt;") == 0)
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utf8[0] = '>';
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}
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}
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return 1;
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}
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static int rdtk_font_parse_descriptor_buffer(rdtkFont* font, BYTE* buffer, int size)
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{
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char* p;
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char* q;
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char* r;
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char* beg;
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char* end;
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char* tok[4];
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int index;
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int count;
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rdtkGlyph* glyph;
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p = strstr((char*) buffer, "<?xml version=\"1.0\" encoding=\"utf-8\"?>");
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if (!p)
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return -1;
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p += sizeof("<?xml version=\"1.0\" encoding=\"utf-8\"?>") - 1;
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p = strstr(p, "<Font ");
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if (!p)
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return -1;
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p += sizeof("<Font ") - 1;
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/* find closing font tag */
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end = strstr(p, "</Font>");
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if (!end)
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return -1;
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/* parse font size */
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p = strstr(p, "size=\"");
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if (!p)
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return -1;
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p += sizeof("size=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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errno = 0;
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{
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long val = strtol(p, NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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font->size = val;
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}
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*q = '"';
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if (font->size <= 0)
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return -1;
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p = q + 1;
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/* parse font family */
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p = strstr(p, "family=\"");
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if (!p)
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return -1;
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p += sizeof("family=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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font->family = _strdup(p);
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*q = '"';
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if (!font->family)
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return -1;
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p = q + 1;
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/* parse font height */
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p = strstr(p, "height=\"");
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if (!p)
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return -1;
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p += sizeof("height=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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errno = 0;
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{
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long val = strtol(p, NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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font->height = val;
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}
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*q = '"';
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if (font->height <= 0)
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return -1;
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p = q + 1;
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/* parse font style */
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p = strstr(p, "style=\"");
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if (!p)
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return -1;
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p += sizeof("style=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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font->style = _strdup(p);
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*q = '"';
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if (!font->style)
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return -1;
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p = q + 1;
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//printf("size: %d family: %s height: %d style: %s\n",
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// font->size, font->family, font->height, font->style);
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beg = p;
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count = 0;
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while (p < end)
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{
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p = strstr(p, "<Char ");
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if (!p)
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return -1;
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p += sizeof("<Char ") - 1;
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r = strstr(p, "/>");
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if (!r)
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return -1;
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*r = '\0';
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p = r + sizeof("/>");
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*r = '/';
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count++;
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}
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font->glyphCount = count;
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font->glyphs = NULL;
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if (count > 0)
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font->glyphs = (rdtkGlyph*) calloc(font->glyphCount, sizeof(rdtkGlyph));
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if (!font->glyphs)
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return -1;
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p = beg;
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index = 0;
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while (p < end)
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{
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p = strstr(p, "<Char ");
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if (!p)
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return -1;
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p += sizeof("<Char ") - 1;
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r = strstr(p, "/>");
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if (!r)
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return -1;
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*r = '\0';
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/* start parsing glyph */
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glyph = &font->glyphs[index];
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/* parse glyph width */
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p = strstr(p, "width=\"");
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if (!p)
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return -1;
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p += sizeof("width=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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errno = 0;
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{
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long val = strtoul(p, NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->width = val;
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}
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*q = '"';
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if (glyph->width < 0)
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return -1;
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p = q + 1;
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/* parse glyph offset x,y */
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p = strstr(p, "offset=\"");
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if (!p)
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return -1;
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p += sizeof("offset=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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tok[0] = p;
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p = strchr(tok[0] + 1, ' ');
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if (!p)
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return -1;
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*p = 0;
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tok[1] = p + 1;
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errno = 0;
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{
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long val = strtol(tok[0], NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->offsetX = val;
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}
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{
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long val = strtol(tok[1], NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->offsetY = val;
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}
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*q = '"';
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p = q + 1;
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/* parse glyph rect x,y,w,h */
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p = strstr(p, "rect=\"");
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if (!p)
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return -1;
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p += sizeof("rect=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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tok[0] = p;
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p = strchr(tok[0] + 1, ' ');
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if (!p)
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return -1;
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*p = 0;
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tok[1] = p + 1;
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p = strchr(tok[1] + 1, ' ');
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if (!p)
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return -1;
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*p = 0;
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tok[2] = p + 1;
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p = strchr(tok[2] + 1, ' ');
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if (!p)
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return -1;
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*p = 0;
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tok[3] = p + 1;
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errno = 0;
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{
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long val = strtol(tok[0], NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->rectX = val;
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}
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{
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long val = strtol(tok[1], NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->rectY = val;
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}
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{
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long val = strtol(tok[2], NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->rectWidth = val;
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}
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{
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long val = strtol(tok[3], NULL, 0);
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if ((errno != 0) || (val < INT32_MIN) || (val > INT32_MAX))
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return -1;
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glyph->rectHeight = val;
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}
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*q = '"';
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p = q + 1;
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/* parse code */
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p = strstr(p, "code=\"");
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if (!p)
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return -1;
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p += sizeof("code=\"") - 1;
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q = strchr(p, '"');
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if (!q)
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return -1;
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*q = '\0';
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rdtk_font_convert_descriptor_code_to_utf8(p, glyph->code);
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*q = '"';
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/* finish parsing glyph */
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p = r + sizeof("/>");
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*r = '/';
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index++;
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}
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return 1;
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}
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static int rdtk_font_load_descriptor(rdtkFont* font, const char* filename)
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{
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int size;
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char* buffer;
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buffer = rdtk_font_load_descriptor_file(filename, &size);
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if (!buffer)
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return -1;
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return rdtk_font_parse_descriptor_buffer(font, (BYTE*) buffer, size);
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}
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rdtkFont* rdtk_font_new(rdtkEngine* engine, const char* path, const char* file)
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{
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int status;
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size_t length;
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rdtkFont* font = NULL;
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char* fontBaseFile = NULL;
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char* fontImageFile = NULL;
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char* fontDescriptorFile = NULL;
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fontBaseFile = GetCombinedPath(path, file);
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if (!fontBaseFile)
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goto cleanup;
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length = strlen(fontBaseFile);
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fontImageFile = (char*) malloc(length + 8);
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if (!fontImageFile)
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goto cleanup;
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sprintf_s(fontImageFile, length + 8, "%s.png", fontBaseFile);
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fontDescriptorFile = (char*) malloc(length + 8);
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if (!fontDescriptorFile)
|
|
goto cleanup;
|
|
|
|
sprintf_s(fontDescriptorFile, length + 8, "%s.xml", fontBaseFile);
|
|
|
|
if (!PathFileExistsA(fontImageFile))
|
|
goto cleanup;
|
|
|
|
if (!PathFileExistsA(fontDescriptorFile))
|
|
goto cleanup;
|
|
|
|
font = (rdtkFont*) calloc(1, sizeof(rdtkFont));
|
|
|
|
if (!font)
|
|
goto cleanup;
|
|
|
|
font->engine = engine;
|
|
font->image = winpr_image_new();
|
|
|
|
if (!font->image)
|
|
goto cleanup;
|
|
|
|
status = winpr_image_read(font->image, fontImageFile);
|
|
|
|
if (status < 0)
|
|
goto cleanup;
|
|
|
|
status = rdtk_font_load_descriptor(font, fontDescriptorFile);
|
|
|
|
if (status < 0)
|
|
goto cleanup;
|
|
|
|
free(fontBaseFile);
|
|
free(fontImageFile);
|
|
free(fontDescriptorFile);
|
|
return font;
|
|
cleanup:
|
|
free(fontBaseFile);
|
|
free(fontImageFile);
|
|
free(fontDescriptorFile);
|
|
|
|
if (font)
|
|
{
|
|
if (font->image)
|
|
winpr_image_free(font->image, TRUE);
|
|
|
|
free(font);
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
static rdtkFont* rdtk_embedded_font_new(rdtkEngine* engine, BYTE* imageData, int imageSize,
|
|
BYTE* descriptorData, int descriptorSize)
|
|
{
|
|
int size;
|
|
int status;
|
|
BYTE* buffer;
|
|
rdtkFont* font;
|
|
font = (rdtkFont*) calloc(1, sizeof(rdtkFont));
|
|
|
|
if (!font)
|
|
return NULL;
|
|
|
|
font->engine = engine;
|
|
font->image = winpr_image_new();
|
|
|
|
if (!font->image)
|
|
{
|
|
free(font);
|
|
return NULL;
|
|
}
|
|
|
|
status = winpr_image_read_buffer(font->image, imageData, imageSize);
|
|
|
|
if (status < 0)
|
|
{
|
|
winpr_image_free(font->image, TRUE);
|
|
free(font);
|
|
return NULL;
|
|
}
|
|
|
|
size = descriptorSize;
|
|
buffer = (BYTE*) malloc(size);
|
|
|
|
if (!buffer)
|
|
{
|
|
winpr_image_free(font->image, TRUE);
|
|
free(font);
|
|
return NULL;
|
|
}
|
|
|
|
CopyMemory(buffer, descriptorData, size);
|
|
status = rdtk_font_parse_descriptor_buffer(font, buffer, size);
|
|
free(buffer);
|
|
|
|
if (status < 0)
|
|
{
|
|
winpr_image_free(font->image, TRUE);
|
|
free(font);
|
|
return NULL;
|
|
}
|
|
|
|
return font;
|
|
}
|
|
void rdtk_font_free(rdtkFont* font)
|
|
{
|
|
if (font)
|
|
{
|
|
free(font->family);
|
|
free(font->style);
|
|
winpr_image_free(font->image, TRUE);
|
|
free(font->glyphs);
|
|
free(font);
|
|
}
|
|
}
|
|
int rdtk_font_engine_init(rdtkEngine* engine)
|
|
{
|
|
if (!engine->font)
|
|
{
|
|
int imageSize;
|
|
int descriptorSize;
|
|
BYTE* imageData = NULL;
|
|
BYTE* descriptorData = NULL;
|
|
imageSize = rdtk_get_embedded_resource_file("source_serif_pro_regular_12.png", &imageData);
|
|
descriptorSize = rdtk_get_embedded_resource_file("source_serif_pro_regular_12.xml",
|
|
&descriptorData);
|
|
|
|
if ((imageSize < 0) || (descriptorSize < 0))
|
|
return -1;
|
|
|
|
engine->font = rdtk_embedded_font_new(engine, imageData, imageSize, descriptorData, descriptorSize);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
int rdtk_font_engine_uninit(rdtkEngine* engine)
|
|
{
|
|
if (engine->font)
|
|
{
|
|
rdtk_font_free(engine->font);
|
|
engine->font = NULL;
|
|
}
|
|
|
|
return 1;
|
|
}
|