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-rw-r--r--src/drv/cdgl.c1398
1 files changed, 1398 insertions, 0 deletions
diff --git a/src/drv/cdgl.c b/src/drv/cdgl.c
new file mode 100644
index 0000000..daec6f0
--- /dev/null
+++ b/src/drv/cdgl.c
@@ -0,0 +1,1398 @@
+/** \file
+ * \brief OpenGL Base Driver
+ *
+ * See Copyright Notice in cd.h
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <math.h>
+
+#ifdef WIN32
+#include <windows.h>
+#else
+#include <iconv.h>
+#endif
+
+#include <GL/gl.h>
+#include <GL/glu.h>
+
+#include <FTGL/ftgl.h>
+
+#include "cd.h"
+#include "cd_private.h"
+#include "cdgl.h"
+
+#ifndef M_PI
+#define M_PI 3.14159265358979323846
+#endif
+
+#define NUM_HATCHES 6
+#define HATCH_WIDTH 8
+#define HATCH_HEIGHT 8
+
+/*
+** 6 predefined patterns to be accessed through cdHatch(
+CD_HORIZONTAL | CD_VERTICAL | CD_FDIAGONAL | CD_BDIAGONAL |
+CD_CROSS | CD_DIAGCROSS)
+
+*/
+static char hatches[NUM_HATCHES][8] = {
+ {0x00,0x00,0xFF,0x00,0x00,0x00,0xFF,0x00}, /* HORIZONTAL */
+ {0x22,0x22,0x22,0x22,0x22,0x22,0x22,0x22}, /* VERTICAL */
+ {0x08,0x10,0x20,0x40,0x80,0x01,0x02,0x04}, /* FDIAGONAL */
+ {0x10,0x08,0x04,0x02,0x01,0x80,0x40,0x20}, /* BDIAGONAL */
+ {0x22,0x22,0xFF,0x22,0x22,0x22,0xFF,0x22}, /* CROSS */
+ {0x18,0x18,0x24,0x42,0x81,0x81,0x42,0x24} /* DIAGCROSS */
+};
+
+struct _cdCtxImage
+{
+ unsigned int w, h, depth;
+ GLubyte* img;
+};
+
+struct _cdCtxCanvas
+{
+ cdCanvas* canvas;
+
+ FTGLfont *font;
+ char fontfilename[10240];
+
+ char* glLastConvertUTF8;
+
+ float rotate_angle;
+ int rotate_center_x;
+ int rotate_center_y;
+
+ int poly_holes[500];
+ int holes;
+};
+
+/******************************************************/
+
+static char* cdglStrConvertToUTF8(cdCtxCanvas *ctxcanvas, const char* str, unsigned int len)
+{
+ if (ctxcanvas->glLastConvertUTF8)
+ free(ctxcanvas->glLastConvertUTF8);
+
+#ifdef WIN32
+ {
+ wchar_t* toUnicode;
+
+ toUnicode = (wchar_t*)malloc((len+1) * sizeof(wchar_t));
+ MultiByteToWideChar(CP_ACP, 0, str, len+1, toUnicode, (len+1));
+
+ len = WideCharToMultiByte(CP_UTF8, 0, toUnicode, -1, NULL, 0, NULL, NULL);
+ if(!len)
+ return (char*)str;
+
+ ctxcanvas->glLastConvertUTF8 = (char*)malloc(len * sizeof(char));
+ WideCharToMultiByte(CP_UTF8, 0, toUnicode, -1, ctxcanvas->glLastConvertUTF8, len, NULL, NULL);
+
+ free(toUnicode);
+ }
+#else
+ {
+ /* Based on http://www.lemoda.net/c/iconv-example/iconv-example.html
+ Last access: June 15th, 2010. */
+ iconv_t cd;
+ unsigned int utf8len = len*2;
+ char* utf8 = calloc(utf8len, 1);
+
+ cd = iconv_open("UTF-8", "ISO-8859-1");
+ if(cd == (iconv_t)-1)
+ return (char*)str;
+
+ ctxcanvas->glLastConvertUTF8 = utf8;
+ iconv(cd, (char**)&str, &len, &utf8, &utf8len);
+
+ iconv_close(cd);
+ }
+#endif
+
+ return ctxcanvas->glLastConvertUTF8;
+}
+
+/******************************************************/
+
+static void cdkillcanvas(cdCtxCanvas *ctxcanvas)
+{
+ if(ctxcanvas->font)
+ ftglDestroyFont(ctxcanvas->font);
+
+ if (ctxcanvas->glLastConvertUTF8)
+ free(ctxcanvas->glLastConvertUTF8);
+
+ free(ctxcanvas);
+}
+
+/******************************************************/
+
+static void cdflush(cdCtxCanvas *ctxcanvas)
+{
+ glFlush();
+ (void)ctxcanvas;
+}
+
+/******************************************************/
+
+static int cdclip(cdCtxCanvas *ctxcanvas, int clip_mode)
+{
+ switch (clip_mode)
+ {
+ case CD_CLIPOFF:
+ if(glIsEnabled(GL_SCISSOR_TEST))
+ glDisable(GL_SCISSOR_TEST);
+ break;
+ case CD_CLIPAREA:
+ {
+ glEnable(GL_SCISSOR_TEST);
+ glScissor(ctxcanvas->canvas->clip_rect.xmin, ctxcanvas->canvas->clip_rect.ymin,
+ (ctxcanvas->canvas->clip_rect.xmax - ctxcanvas->canvas->clip_rect.xmin),
+ (ctxcanvas->canvas->clip_rect.ymax - ctxcanvas->canvas->clip_rect.ymin));
+ break;
+ }
+ case CD_CLIPPOLYGON:
+ break;
+ case CD_CLIPREGION:
+ break;
+ }
+
+ return clip_mode;
+}
+
+static void cdfcliparea(cdCtxCanvas *ctxcanvas, double xmin, double xmax, double ymin, double ymax)
+{
+ if (ctxcanvas->canvas->clip_mode == CD_CLIPAREA)
+ {
+ ctxcanvas->canvas->clip_rect.xmin = (int)xmin;
+ ctxcanvas->canvas->clip_rect.ymin = (int)ymin;
+ ctxcanvas->canvas->clip_rect.xmax = (int)xmax;
+ ctxcanvas->canvas->clip_rect.ymax = (int)ymax;
+ cdclip(ctxcanvas, CD_CLIPAREA);
+ }
+}
+
+static void cdcliparea(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax)
+{
+ cdfcliparea(ctxcanvas, (double)xmin, (double)xmax, (double)ymin, (double)ymax);
+}
+
+/******************************************************/
+
+static int cdwritemode(cdCtxCanvas *ctxcanvas, int write_mode)
+{
+ if(glIsEnabled(GL_COLOR_LOGIC_OP))
+ glDisable(GL_COLOR_LOGIC_OP);
+
+ switch (write_mode)
+ {
+ case CD_REPLACE:
+ glLogicOp(GL_COPY);
+ break;
+ case CD_XOR:
+ glLogicOp(GL_XOR);
+ break;
+ case CD_NOT_XOR:
+ glLogicOp(GL_EQUIV);
+ break;
+ }
+
+ glEnable(GL_COLOR_LOGIC_OP);
+
+ (void)ctxcanvas;
+ return write_mode;
+}
+
+static int cdhatch(cdCtxCanvas *ctxcanvas, int hatch_style)
+{
+ GLubyte pattern[128];
+ int x, y, pos = 0;
+
+ glEnable(GL_POLYGON_STIPPLE);
+
+ for (y = 0; y < 128; y+=8)
+ {
+ for (x = 0; x < 8; x++)
+ pattern[x+y] = hatches[hatch_style][pos];
+ pos++;
+
+ if(pos > 7) /* repeat the pattern */
+ pos = 0;
+ }
+ glPolygonStipple(pattern);
+
+ (void)ctxcanvas;
+ return hatch_style;
+}
+
+static void cdglEnableBackOpacity(cdCtxCanvas* ctxcanvas)
+{
+ if (ctxcanvas->canvas->back_opacity == CD_OPAQUE)
+ {
+ glColor4ub(cdRed(ctxcanvas->canvas->foreground), cdGreen(ctxcanvas->canvas->foreground), cdBlue(ctxcanvas->canvas->foreground), 255);
+
+ glDepthMask(GL_TRUE);
+
+ if(glIsEnabled(GL_DEPTH_TEST))
+ glDisable(GL_DEPTH_TEST);
+
+ if(glIsEnabled(GL_BLEND))
+ glDisable(GL_BLEND);
+ }
+ else
+ {
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ glEnable(GL_DEPTH_TEST);
+ glDepthMask(GL_FALSE);
+
+ glColor4ub(cdRed(ctxcanvas->canvas->foreground), cdGreen(ctxcanvas->canvas->foreground), cdBlue(ctxcanvas->canvas->foreground), 0);
+ }
+}
+
+static int cdinteriorstyle(cdCtxCanvas *ctxcanvas, int style)
+{
+ switch (style)
+ {
+ case CD_HOLLOW:
+ glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
+ break;
+ case CD_SOLID:
+ case CD_HATCH :
+ case CD_STIPPLE:
+ case CD_PATTERN:
+ glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
+ break;
+ }
+
+ switch (style)
+ {
+ case CD_HOLLOW:
+ case CD_SOLID:
+ if(glIsEnabled(GL_POLYGON_STIPPLE))
+ glDisable(GL_POLYGON_STIPPLE);
+ break;
+ case CD_HATCH:
+ cdglEnableBackOpacity(ctxcanvas);
+ cdhatch(ctxcanvas, ctxcanvas->canvas->hatch_style);
+ break;
+ case CD_STIPPLE:
+ case CD_PATTERN:
+ break;
+ }
+
+ return style;
+}
+
+static int cdlinestyle(cdCtxCanvas *ctxcanvas, int style)
+{
+ switch (style)
+ {
+ case CD_CONTINUOUS:
+ if(glIsEnabled(GL_LINE_STIPPLE))
+ glDisable(GL_LINE_STIPPLE);
+ return style;
+ break;
+ case CD_DASHED:
+ case CD_DOTTED:
+ case CD_DASH_DOT:
+ case CD_DASH_DOT_DOT:
+ case CD_CUSTOM:
+ glEnable(GL_LINE_STIPPLE);
+ cdglEnableBackOpacity(ctxcanvas);
+ break;
+ }
+
+ switch (style)
+ {
+ case CD_DASHED:
+ glLineStipple(1, 0x3F);
+ break;
+ case CD_DOTTED:
+ glLineStipple(1, 0x33);
+ break;
+ case CD_DASH_DOT:
+ glLineStipple(1, 0x33F);
+ break;
+ case CD_DASH_DOT_DOT:
+ glLineStipple(1, 0x333F);
+ break;
+ case CD_CUSTOM:
+ /* style patterns more than 16 bits are not completely drawed */
+ glLineStipple(1, (GLushort)*ctxcanvas->canvas->line_dashes);
+ break;
+ }
+
+ return style;
+}
+
+static int cdlinewidth(cdCtxCanvas *ctxcanvas, int width)
+{
+ if (width == 0)
+ width = 1;
+
+ glLineWidth((GLfloat)width);
+
+ (void)ctxcanvas;
+ return width;
+}
+
+static int cdbackopacity(cdCtxCanvas *ctxcanvas, int opaque)
+{
+ ctxcanvas->canvas->back_opacity = opaque;
+ cdinteriorstyle(ctxcanvas, ctxcanvas->canvas->interior_style);
+ cdlinestyle(ctxcanvas, ctxcanvas->canvas->line_style);
+ return opaque;
+}
+
+/***********************************************************************************/
+/* Functions to get the font name path */
+/* Base source = https://www.h3dapi.org:8090/H3DAPI/trunk/H3DAPI/src/FontStyle.cpp */
+/***********************************************************************************/
+#ifdef WIN32
+static LONG cdglWGetNextNameValue(HKEY key, LPCTSTR subkey, LPTSTR szName, LPTSTR szData)
+{
+ static HKEY hkey = NULL;
+ static DWORD dwIndex = 0;
+ LONG retval;
+
+ if (subkey == NULL && szName == NULL && szData == NULL)
+ {
+ if (hkey)
+ RegCloseKey(hkey);
+
+ hkey = NULL;
+ return ERROR_SUCCESS;
+ }
+
+ if (subkey && subkey[0] != 0)
+ {
+ retval = RegOpenKeyEx(key, subkey, 0, KEY_READ, &hkey);
+ if (retval != ERROR_SUCCESS)
+ return retval;
+
+ dwIndex = 0;
+ }
+ else
+ dwIndex++;
+
+ *szName = 0;
+ *szData = 0;
+
+ {
+ char szValueName[MAX_PATH];
+ DWORD dwValueNameSize = sizeof(szValueName)-1;
+ BYTE szValueData[MAX_PATH];
+ DWORD dwValueDataSize = sizeof(szValueData)-1;
+ DWORD dwType = 0;
+
+ retval = RegEnumValue(hkey, dwIndex, szValueName, &dwValueNameSize, NULL, &dwType, szValueData, &dwValueDataSize);
+ if (retval == ERROR_SUCCESS)
+ {
+ lstrcpy(szName, (char *)szValueName);
+ lstrcpy(szData, (char *)szValueData);
+ }
+ }
+
+ return retval;
+}
+
+static int cdglWGetFontFileName(LPCTSTR lpszFontName, int bold, int italic, char* fileName)
+{
+ TCHAR szName[2 * MAX_PATH];
+ TCHAR szData[2 * MAX_PATH];
+ TCHAR displayName[2 * MAX_PATH];
+ LPCTSTR strFont = "Software\\Microsoft\\Windows NT\\CurrentVersion\\Fonts";
+ char localFontName[256];
+ int bResult = 0;
+
+ sprintf(localFontName, "%s", lpszFontName);
+
+ if( bold )
+ strcat(localFontName, " Bold");
+
+ if( italic )
+ strcat(localFontName, " Italic");
+
+ while (cdglWGetNextNameValue(HKEY_LOCAL_MACHINE, strFont, szName, szData) == ERROR_SUCCESS)
+ {
+ if (_strnicmp(localFontName, szName, strlen(localFontName)) == 0)
+ {
+ sprintf(displayName, "%s", szName);
+ sprintf(fileName, "%s", szData);
+ bResult = 1;
+ break;
+ }
+ strFont = "";
+ }
+ /* close the registry key */
+ cdglWGetNextNameValue(HKEY_LOCAL_MACHINE, NULL, NULL, NULL);
+
+ return bResult;
+}
+#else
+#include <fontconfig/fontconfig.h>
+
+static int cdglXGetFontFileName(const char *font_name, int bold, int italic, char* fileName)
+{
+ char styles[4][20];
+ int style_size;
+ FcObjectSet *os = 0;
+ FcFontSet *fs;
+ FcPattern *pat;
+ int bResult = 0;
+
+ if( bold && italic )
+ {
+ sprintf(styles[0], "%s", "BoldItalic");
+ sprintf(styles[1], "%s", "Bold Italic");
+ sprintf(styles[2], "%s", "Bold Oblique");
+ sprintf(styles[3], "%s", "BoldOblique");
+ style_size = 4;
+ }
+ else if( bold )
+ {
+ sprintf(styles[0], "%s", "Bold");
+ style_size = 1;
+ }
+ else if( italic )
+ {
+ sprintf(styles[0], "%s", "Italic");
+ sprintf(styles[1], "%s", "Oblique");
+ style_size = 2;
+ }
+ else
+ {
+ sprintf(styles[0], "%s", "Regular");
+ sprintf(styles[1], "%s", "Normal");
+ sprintf(styles[2], "%s", "Medium");
+ style_size = 3;
+ }
+
+ pat = FcPatternCreate();
+ os = FcObjectSetBuild(FC_FAMILY, FC_FILE, FC_STYLE, NULL);
+ fs = FcFontList(NULL, pat, os);
+ if (pat)
+ FcPatternDestroy(pat);
+
+ if(fs)
+ {
+ int j, s;
+
+ for (j = 0; j < fs->nfont; j++)
+ {
+ FcChar8 *file;
+ FcChar8 *style;
+ FcChar8 *family;
+
+ FcPatternGetString(fs->fonts[j], FC_FILE, 0, &file);
+ FcPatternGetString(fs->fonts[j], FC_STYLE, 0, &style );
+ FcPatternGetString(fs->fonts[j], FC_FAMILY, 0, &family );
+
+ if (strncasecmp(font_name, (char*)family, strlen(font_name)) == 0)
+ {
+ /* check if the font is of the correct type. */
+ for(s = 0; s < style_size; s++ )
+ {
+ if (strcasecmp(styles[s], (char*)style ) == 0)
+ {
+ sprintf(fileName, "%s", (char*)file);
+ bResult = 1;
+ FcFontSetDestroy (fs);
+
+ return bResult;
+ }
+
+ /* set value to use if no more correct font of same family is found. */
+ sprintf(fileName, "%s", (char*)file);
+ bResult = 1;
+ }
+ }
+ }
+ FcFontSetDestroy (fs);
+ }
+
+ return bResult;
+}
+#endif
+
+static int cdfont(cdCtxCanvas *ctxcanvas, const char *typeface, int style, int size)
+{
+ int is_italic = 0, is_bold = 0; /* default is CD_PLAIN */
+ char strFontFileName[256];
+
+ if (style & CD_BOLD)
+ is_bold = 1;
+
+ if (style & CD_ITALIC)
+ is_italic = 1;
+
+#ifdef WIN32
+ if (cdStrEqualNoCase(typeface, "Courier") || cdStrEqualNoCase(typeface, "Monospace"))
+ typeface = "Courier New";
+ else if (cdStrEqualNoCase(typeface, "Times") || cdStrEqualNoCase(typeface, "Serif"))
+ typeface = "Times New Roman";
+ else if (cdStrEqualNoCase(typeface, "Helvetica") || cdStrEqualNoCase(typeface, "Sans"))
+ typeface = "Arial";
+
+ if(!cdglWGetFontFileName(typeface, is_bold, is_italic, strFontFileName))
+ return 0;
+
+ sprintf(ctxcanvas->fontfilename, "%s\\fonts\\%s", getenv("windir"), strFontFileName);
+#else
+ if (cdStrEqualNoCase(typeface, "Courier") || cdStrEqualNoCase(typeface, "Courier New") || cdStrEqualNoCase(typeface, "Monospace"))
+ typeface = "freemono";
+ else if (cdStrEqualNoCase(typeface, "Times") || cdStrEqualNoCase(typeface, "Times New Roman")|| cdStrEqualNoCase(typeface, "Serif"))
+ typeface = "freeserif";
+ else if (cdStrEqualNoCase(typeface, "Helvetica") || cdStrEqualNoCase(typeface, "Arial") || cdStrEqualNoCase(typeface, "Sans"))
+ typeface = "freesans";
+
+ if(!cdglXGetFontFileName(typeface, is_bold, is_italic, strFontFileName))
+ return 0;
+
+ sprintf(ctxcanvas->fontfilename, "%s", strFontFileName);
+#endif
+
+ ctxcanvas->font = ftglCreateBufferFont(ctxcanvas->fontfilename);
+
+ if (!ctxcanvas->font)
+ return 0;
+
+ if (size < 0)
+ size = cdGetFontSizePoints(ctxcanvas->canvas, size);
+
+ ftglSetFontFaceSize(ctxcanvas->font, size, 72);
+ ftglSetFontCharMap(ctxcanvas->font, ft_encoding_unicode);
+
+ return 1;
+}
+
+static void cdgetfontdim(cdCtxCanvas *ctxcanvas, int *max_width, int *height, int *ascent, int *descent)
+{
+ if(!ctxcanvas->font)
+ return;
+
+ if (max_width) *max_width = (int)ftglGetFontAdvance(ctxcanvas->font, "W");
+ if (height) *height = (int)ftglGetFontLineHeight(ctxcanvas->font);
+ if (ascent) *ascent = (int)ftglGetFontAscender(ctxcanvas->font);
+ if (descent) *descent = (int)ftglGetFontDescender(ctxcanvas->font);
+}
+
+static long int cdforeground(cdCtxCanvas *ctxcanvas, long int color)
+{
+ unsigned char r, g, b;
+ (void)ctxcanvas;
+
+ //TODO
+ if(glIsEnabled(GL_POLYGON_STIPPLE))
+ glDisable(GL_POLYGON_STIPPLE);
+
+ cdDecodeColor(color, &r, &g, &b);
+ glColor3ub(r, g, b);
+
+ return color;
+}
+
+static void cdclear(cdCtxCanvas* ctxcanvas)
+{
+ unsigned char r, g, b;
+ cdDecodeColor(ctxcanvas->canvas->background, &r, &g, &b);
+ glClearColor((GLclampf)((double)r/255.0), (GLclampf)((double)g/255.0), (GLclampf)((double)b/255.0), 0);
+ glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+}
+
+static void cdfline(cdCtxCanvas *ctxcanvas, double x1, double y1, double x2, double y2)
+{
+ glBegin(GL_LINES);
+ glVertex2d(x1, y1);
+ glVertex2d(x2, y2);
+ glEnd();
+
+ (void)ctxcanvas;
+}
+
+static void cdline(cdCtxCanvas *ctxcanvas, int x1, int y1, int x2, int y2)
+{
+ cdfline(ctxcanvas, (double)x1, (double)y1, (double)x2, (double)y2);
+}
+
+static void cdfrect(cdCtxCanvas *ctxcanvas, double xmin, double xmax, double ymin, double ymax)
+{
+ glBegin(GL_LINE_LOOP);
+ glVertex2d(xmin, ymin);
+ glVertex2d(xmax, ymin);
+ glVertex2d(xmax, ymax);
+ glVertex2d(xmin, ymax);
+ glEnd();
+
+ (void)ctxcanvas;
+}
+
+static void cdrect(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax)
+{
+ cdfrect(ctxcanvas, (double)xmin, (double)xmax, (double)ymin, (double)ymax);
+}
+
+static void cdfbox(cdCtxCanvas *ctxcanvas, double xmin, double xmax, double ymin, double ymax)
+{
+ glBegin(GL_QUADS);
+ glVertex2d(xmin, ymin);
+ glVertex2d(xmax, ymin);
+ glVertex2d(xmax, ymax);
+ glVertex2d(xmin, ymax);
+ glEnd();
+
+ (void)ctxcanvas;
+}
+
+static void cdbox(cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax)
+{
+ cdfbox(ctxcanvas, (double)xmin, (double)xmax, (double)ymin, (double)ymax);
+}
+
+static void cdftext(cdCtxCanvas *ctxcanvas, double x, double y, const char *s, int len)
+{
+ int dir = -1;
+ float bounds[6];
+ int w, h, desc;
+ double x_origin = x;
+ double y_origin = y;
+
+ if (!ctxcanvas->font)
+ return;
+
+ s = cdglStrConvertToUTF8(ctxcanvas, s, len);
+ ftglGetFontBBox(ctxcanvas->font, s, len, bounds);
+
+ desc = (int)ftglGetFontDescender(ctxcanvas->font);
+ w = (int)ceil(bounds[3] - bounds[0]);
+ h = (int)ceil(bounds[4] - bounds[1]);
+
+ switch (ctxcanvas->canvas->text_alignment)
+ {
+ case CD_BASE_RIGHT:
+ case CD_NORTH_EAST:
+ case CD_EAST:
+ case CD_SOUTH_EAST:
+ x = x - w;
+ break;
+ case CD_BASE_CENTER:
+ case CD_CENTER:
+ case CD_NORTH:
+ case CD_SOUTH:
+ x = x - w/2;
+ break;
+ case CD_BASE_LEFT:
+ case CD_NORTH_WEST:
+ case CD_WEST:
+ case CD_SOUTH_WEST:
+ x = x;
+ break;
+ }
+
+ if (ctxcanvas->canvas->invert_yaxis)
+ dir = 1;
+
+ switch (ctxcanvas->canvas->text_alignment)
+ {
+ case CD_BASE_LEFT:
+ case CD_BASE_CENTER:
+ case CD_BASE_RIGHT:
+ y = y;
+ break;
+ case CD_SOUTH_EAST:
+ case CD_SOUTH_WEST:
+ case CD_SOUTH:
+ y = y + dir * desc;
+ break;
+ case CD_NORTH_EAST:
+ case CD_NORTH:
+ case CD_NORTH_WEST:
+ y = y + dir * (h + desc);
+ break;
+ case CD_CENTER:
+ case CD_EAST:
+ case CD_WEST:
+ y = y + dir * (h / 2);
+ break;
+ }
+
+ if (ctxcanvas->canvas->text_orientation != 0)
+ {
+ double angle = CD_DEG2RAD * ctxcanvas->canvas->text_orientation;
+ double cos_angle = cos(angle);
+ double sin_angle = sin(angle);
+ cdfRotatePoint(ctxcanvas->canvas, x, y, x_origin, y_origin, &x, &y, sin_angle, cos_angle);
+ }
+
+ glPushMatrix();
+ glTranslated(x, y, 0.0);
+ glRotated(ctxcanvas->canvas->text_orientation, 0, 0, 1);
+
+ /* FTGL not operate as expected when a logical pixel operation (write mode) is enabled. */
+ if(glIsEnabled(GL_COLOR_LOGIC_OP))
+ {
+ glDisable(GL_COLOR_LOGIC_OP);
+ ftglRenderFont(ctxcanvas->font, s, FTGL_RENDER_ALL);
+ glEnable(GL_COLOR_LOGIC_OP);
+ }
+ else
+ ftglRenderFont(ctxcanvas->font, s, FTGL_RENDER_ALL);
+ glPopMatrix();
+}
+
+static void cdtext(cdCtxCanvas *ctxcanvas, int x, int y, const char *s, int len)
+{
+ cdftext(ctxcanvas, (double)x, (double)y, s, len);
+}
+
+static void cdgettextsize(cdCtxCanvas *ctxcanvas, const char *s, int len, int *width, int *height)
+{
+ float bounds[6];
+
+ if (!ctxcanvas->font)
+ return;
+
+ s = cdglStrConvertToUTF8(ctxcanvas, s, len);
+ ftglGetFontBBox(ctxcanvas->font, s, len, bounds);
+
+ if (width) *width = (int)ceil(bounds[3] - bounds[0]);
+ if (height) *height = (int)ceil(bounds[4] - bounds[1]);
+}
+
+static void cdpoly(cdCtxCanvas *ctxcanvas, int mode, cdPoint* poly, int n)
+{
+ int i;
+
+ if (mode == CD_CLIP)
+ return;
+
+ if (mode == CD_BEZIER)
+ {
+ int i, prec = 100;
+ float (*points)[3] = malloc(n * sizeof(*points));
+
+ for(i = 0; i < n; i++)
+ {
+ points[i][0] = (float)poly[i].x;
+ points[i][1] = (float)poly[i].y;
+ points[i][2] = 0;
+ }
+
+ glMap1f(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, n, &points[0][0]);
+ glEnable(GL_MAP1_VERTEX_3);
+ glMapGrid1f(prec, 0.0, 1.0);
+ glEvalMesh1(GL_LINE, 0, prec);
+ glDisable(GL_MAP1_VERTEX_3);
+
+ return;
+ }
+
+ if (mode == CD_PATH)
+ {
+ cdSimPolyPath(ctxcanvas->canvas, poly, n);
+ return;
+ }
+
+ switch (mode)
+ {
+ case CD_CLOSED_LINES :
+ glBegin(GL_LINE_LOOP);
+ break;
+ case CD_OPEN_LINES :
+ glBegin(GL_LINE_STRIP);
+ break;
+ case CD_FILL :
+ glBegin(GL_POLYGON);
+ break;
+ }
+
+ for(i = 0; i < n; i++)
+ glVertex2i(poly[i].x, poly[i].y);
+ glEnd();
+
+ (void)ctxcanvas;
+}
+
+static void cdfpoly(cdCtxCanvas *ctxcanvas, int mode, cdfPoint* poly, int n)
+{
+ int i;
+
+ if (mode == CD_CLIP)
+ return;
+
+ if (mode == CD_BEZIER)
+ {
+ int i, prec = 100;
+ double (*points)[3] = malloc(n * sizeof(*points));
+
+ for(i = 0; i < n; i++)
+ {
+ points[i][0] = poly[i].x;
+ points[i][1] = poly[i].y;
+ points[i][2] = 0;
+ }
+
+ glMap1d(GL_MAP1_VERTEX_3, 0.0, 1.0, 3, n, &points[0][0]);
+ glEnable(GL_MAP1_VERTEX_3);
+ glMapGrid1d(prec, 0.0, 1.0);
+ glEvalMesh1(GL_LINE, 0, prec);
+ glDisable(GL_MAP1_VERTEX_3);
+
+ return;
+ }
+
+ if (mode == CD_PATH)
+ {
+ cdfSimPolyPath(ctxcanvas->canvas, poly, n);
+ return;
+ }
+
+ switch (mode)
+ {
+ case CD_CLOSED_LINES :
+ glBegin(GL_LINE_LOOP);
+ break;
+ case CD_OPEN_LINES :
+ glBegin(GL_LINE_STRIP);
+ break;
+ case CD_FILL :
+ glBegin(GL_POLYGON);
+ break;
+ }
+
+ for(i = 0; i < n; i++)
+ glVertex2d(poly[i].x, poly[i].y);
+ glEnd();
+
+ (void)ctxcanvas;
+}
+
+/******************************************************/
+
+static void cdglGetImageData(GLubyte* glImage, unsigned char *r, unsigned char *g, unsigned char *b, int w, int h)
+{
+ int y, x;
+ unsigned char *pixline_data;
+ int rowstride, channels = 3;
+
+ rowstride = w * channels;
+
+ /* planes are separated in image data */
+ for (y = 0; y < h; y++)
+ {
+ int lineoffset = y * w;
+ pixline_data = (unsigned char*)glImage + y * rowstride;
+ for(x = 0; x < w; x++)
+ {
+ int pos = x*channels;
+ r[lineoffset+x] = pixline_data[pos];
+ g[lineoffset+x] = pixline_data[pos+1];
+ b[lineoffset+x] = pixline_data[pos+2];
+ }
+ }
+}
+
+static GLubyte* cdglCreateImageRGBA(int width, int height, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int image_width)
+{
+ GLubyte* pixline_data;
+ GLubyte* glImage;
+ int x, y;
+ int channels = a ? 4 : 3;
+ int rowstride = width * channels;
+ int lineoffset;
+
+ glImage = (GLubyte*)malloc(rowstride * height);
+
+ /* planes are separated in image data */
+ for (y = 0; y < height; y++)
+ {
+ lineoffset = y * image_width;
+ pixline_data = glImage + y * rowstride;
+
+ for(x=0;x<width;x++)
+ {
+ int pos = x*channels;
+ pixline_data[pos] = r[lineoffset+x];
+ pixline_data[pos+1] = g[lineoffset+x];
+ pixline_data[pos+2] = b[lineoffset+x];
+
+ if (a)
+ pixline_data[pos+3] = a[lineoffset+x];
+ }
+ }
+
+ return glImage;
+}
+
+static GLubyte* cdglCreateImageMap(int width, int height, const long* colors, const unsigned char *map, int image_width)
+{
+ const GLubyte *line_data;
+ GLubyte *pixline_data;
+ GLubyte *glImage;
+ int x, y, channels = 3;
+ int rowstride = width * channels;
+
+ glImage = (GLubyte*)malloc(rowstride * height);
+
+ for (y = 0; y < height; y++)
+ {
+ pixline_data = glImage + y * rowstride;
+ line_data = map + y * image_width;
+
+ for (x=0; x<width; x++)
+ {
+ GLubyte index = line_data[x];
+ long c = colors[index];
+ GLubyte *r = &pixline_data[channels*x],
+ *g = r+1,
+ *b = g+1;
+
+ *r = cdRed(c);
+ *g = cdGreen(c);
+ *b = cdBlue(c);
+ }
+ }
+
+ return glImage;
+}
+
+static void cdgetimagergb(cdCtxCanvas *ctxcanvas, unsigned char *r, unsigned char *g, unsigned char *b, int x, int y, int w, int h)
+{
+ GLubyte* glImage = (GLubyte*)malloc((w*3)*h); /* each pixel uses 3 bytes (RGB) */
+
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+ glReadPixels(x, y, w, h, GL_RGB, GL_UNSIGNED_BYTE, glImage);
+ if (!glImage)
+ return;
+
+ cdglGetImageData(glImage, r, g, b, w, h);
+
+ (void)ctxcanvas;
+
+ free(glImage);
+}
+
+static void cdputimagerectrgb(cdCtxCanvas *ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ /* Images are bitmaps, and cannot be directly rotated or scaled */
+ GLubyte* glImage;
+ int rw = xmax-xmin+1;
+ int rh = ymax-ymin+1;
+
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+
+ glImage = cdglCreateImageRGBA(rw, rh, r, g, b, NULL, iw);
+ if (!glImage)
+ return;
+
+ /* adjusts when the initial position (x,y) are less than 0 */
+ if(x < 0)
+ {
+ w -= x;
+ x = 0;
+ }
+
+ if(y < 0)
+ {
+ h -= y;
+ y = 0;
+ }
+
+ if (w != rw || w != rh)
+ glPixelZoom((GLfloat)w/rw, (GLfloat)h/rh);
+
+ glRasterPos2i(x, y);
+ glDrawPixels(rw, rh, GL_RGB, GL_UNSIGNED_BYTE, glImage);
+
+ (void)ih;
+ (void)ctxcanvas;
+
+ free(glImage);
+}
+
+static void cdputimagerectrgba(cdCtxCanvas *ctxcanvas, int iw, int ih, const unsigned char *r, const unsigned char *g, const unsigned char *b, const unsigned char *a, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ /* Images are bitmaps, and cannot be directly rotated or scaled */
+ GLubyte* glImage;
+ int rw = xmax-xmin+1;
+ int rh = ymax-ymin+1;
+
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+
+ glImage = cdglCreateImageRGBA(rw, rh, r, g, b, a, iw);
+ if (!glImage)
+ return;
+
+ /* adjusts when the initial position (x,y) are less than 0 */
+ if(x < 0)
+ {
+ w -= x;
+ x = 0;
+ }
+
+ if(y < 0)
+ {
+ h -= y;
+ y = 0;
+ }
+
+ if (w != rw || h != rh)
+ glPixelZoom((GLfloat)w/rw, (GLfloat)h/rh);
+
+ glEnable(GL_BLEND);
+ glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
+
+ glRasterPos2i(x, y);
+
+ if(glIsEnabled(GL_COLOR_LOGIC_OP))
+ {
+ glDisable(GL_COLOR_LOGIC_OP);
+ glDrawPixels(rw, rh, GL_RGBA, GL_UNSIGNED_BYTE, glImage);
+ glEnable(GL_COLOR_LOGIC_OP);
+ }
+ else
+ glDrawPixels(rw, rh, GL_RGBA, GL_UNSIGNED_BYTE, glImage);
+
+ glDisable(GL_BLEND);
+
+ (void)ih;
+ (void)ctxcanvas;
+
+ free(glImage);
+}
+
+static void cdputimagerectmap(cdCtxCanvas *ctxcanvas, int iw, int ih, const unsigned char *index, const long int *colors, int x, int y, int w, int h, int xmin, int xmax, int ymin, int ymax)
+{
+ /* Images are bitmaps, and cannot be directly rotated or scaled */
+ GLubyte* glImage;
+ int rw = xmax-xmin+1;
+ int rh = ymax-ymin+1;
+
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+
+ glImage = cdglCreateImageMap(rw, rh, colors, index, iw);
+ if (!glImage)
+ return;
+
+ /* adjusts when the initial position (x,y) are less than 0 */
+ if(x < 0)
+ {
+ w -= x;
+ x = 0;
+ }
+
+ if(y < 0)
+ {
+ h -= y;
+ y = 0;
+ }
+
+ if (w != rw || h != rh)
+ glPixelZoom((GLfloat)w/rw, (GLfloat)h/rh);
+
+ glRasterPos2i(x, y);
+ glDrawPixels(rw, rh, GL_RGB, GL_UNSIGNED_BYTE, glImage);
+
+ (void)ih;
+ (void)ctxcanvas;
+
+ free(glImage);
+}
+
+static void cdpixel(cdCtxCanvas *ctxcanvas, int x, int y, long int color)
+{
+ glColor3ub(cdRed(color), cdGreen(color), cdBlue(color));
+
+ /* Draw pixel */
+ glPointSize(1);
+ glBegin(GL_POINTS);
+ glVertex2i(x, y);
+ glEnd();
+
+ /* restore the foreground color */
+ glColor3ub(cdRed(ctxcanvas->canvas->foreground), cdGreen(ctxcanvas->canvas->foreground), cdBlue(ctxcanvas->canvas->foreground));
+
+ (void)ctxcanvas;
+}
+
+static cdCtxImage *cdcreateimage (cdCtxCanvas *ctxcanvas, int w, int h)
+{
+ cdCtxImage *ctximage = (cdCtxImage *)malloc(sizeof(cdCtxImage));
+
+ ctximage->w = w;
+ ctximage->h = h;
+ ctximage->depth = ctxcanvas->canvas->bpp;
+
+ ctximage->img = (GLubyte*)malloc(w*h*4); /* each pixel uses 4 bytes (RGBA) */
+
+ if (!ctximage->img)
+ {
+ free(ctximage);
+ return (void*)0;
+ }
+
+ return (void*)ctximage;
+}
+
+static void cdgetimage (cdCtxCanvas *ctxcanvas, cdCtxImage *ctximage, int x, int y)
+{
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+ glReadPixels(x, y - ctximage->h+1, ctximage->w, ctximage->h, GL_RGBA, GL_UNSIGNED_BYTE, ctximage->img);
+
+ (void)ctxcanvas;
+}
+
+static void cdputimagerect (cdCtxCanvas *ctxcanvas, cdCtxImage *ctximage, int x, int y, int xmin, int xmax, int ymin, int ymax)
+{
+ glPixelStorei (GL_UNPACK_ALIGNMENT, 1);
+ glRasterPos2i(x, y);
+ glDrawPixels(xmax-xmin+1, ymax-ymin+1, GL_RGBA, GL_UNSIGNED_BYTE, ctximage->img);
+
+ (void)ctxcanvas;
+}
+
+static void cdkillimage (cdCtxImage *ctximage)
+{
+ free(ctximage->img);
+ free(ctximage);
+}
+
+static void cdscrollarea (cdCtxCanvas *ctxcanvas, int xmin, int xmax, int ymin, int ymax, int dx, int dy)
+{
+ glRasterPos2i(xmin+dx, ymin+dy);
+ glCopyPixels(xmin, ymin, xmax-xmin+1, ymax-ymin+1, GL_RGBA);
+
+ (void)ctxcanvas;
+}
+
+static void cdtransform(cdCtxCanvas *ctxcanvas, const double* matrix)
+{
+ if (matrix)
+ {
+ GLdouble transformMTX[4][4];
+
+ transformMTX[0][0] = matrix[0]; transformMTX[0][1] = matrix[1]; transformMTX[0][2] = 0.0; transformMTX[0][3] = 0.0;
+ transformMTX[1][0] = matrix[2]; transformMTX[1][1] = matrix[3]; transformMTX[1][2] = 0.0; transformMTX[1][3] = 0.0;
+ transformMTX[2][0] = 0.0; transformMTX[2][1] = 0.0; transformMTX[2][2] = 1.0; transformMTX[2][3] = 0.0;
+ transformMTX[3][0] = matrix[4]; transformMTX[3][1] = matrix[5]; transformMTX[3][2] = 0.0; transformMTX[3][3] = 1.0;
+
+ glLoadIdentity();
+ glMultMatrixd(&transformMTX[0][0]);
+ }
+
+ (void)ctxcanvas;
+}
+
+/******************************************************************/
+
+static void set_poly_attrib(cdCtxCanvas *ctxcanvas, char* data)
+{
+ int hole;
+
+ if (data == NULL)
+ {
+ ctxcanvas->holes = 0;
+ return;
+ }
+
+ sscanf(data, "%d", &hole);
+ ctxcanvas->poly_holes[ctxcanvas->holes] = hole;
+ ctxcanvas->holes++;
+}
+
+static char* get_poly_attrib(cdCtxCanvas *ctxcanvas)
+{
+ static char holes[10];
+ sprintf(holes, "%d", ctxcanvas->holes);
+ return holes;
+}
+
+static cdAttribute poly_attrib =
+{
+ "POLYHOLE",
+ set_poly_attrib,
+ get_poly_attrib
+};
+
+static void set_rotate_attrib(cdCtxCanvas* ctxcanvas, char* data)
+{
+ if (data)
+ {
+ sscanf(data, "%g %d %d", &ctxcanvas->rotate_angle,
+ &ctxcanvas->rotate_center_x,
+ &ctxcanvas->rotate_center_y);
+
+ cdCanvasTransformTranslate(ctxcanvas->canvas, ctxcanvas->rotate_center_x, ctxcanvas->rotate_center_y);
+ cdCanvasTransformRotate(ctxcanvas->canvas, ctxcanvas->rotate_angle);
+ cdCanvasTransformTranslate(ctxcanvas->canvas, -ctxcanvas->rotate_center_x, -ctxcanvas->rotate_center_y);
+ }
+ else
+ {
+ ctxcanvas->rotate_angle = 0;
+ ctxcanvas->rotate_center_x = 0;
+ ctxcanvas->rotate_center_y = 0;
+
+ cdCanvasTransform(ctxcanvas->canvas, NULL);
+ }
+}
+
+static char* get_rotate_attrib(cdCtxCanvas* ctxcanvas)
+{
+ static char data[100];
+
+ if (!ctxcanvas->rotate_angle)
+ return NULL;
+
+ sprintf(data, "%g %d %d", (double)ctxcanvas->rotate_angle,
+ ctxcanvas->rotate_center_x,
+ ctxcanvas->rotate_center_y);
+
+ return data;
+}
+
+static cdAttribute rotate_attrib =
+{
+ "ROTATE",
+ set_rotate_attrib,
+ get_rotate_attrib
+};
+
+static void set_size_attrib(cdCtxCanvas* ctxcanvas, char* data)
+{
+ if (data)
+ {
+ cdCanvas* canvas = ctxcanvas->canvas;
+ float res = (float)canvas->xres;
+ sscanf(data, "%dx%d %g", &canvas->w, &canvas->h, &res);
+ canvas->yres = canvas->xres = res;
+ canvas->w_mm = ((double)canvas->w) / canvas->xres;
+ canvas->h_mm = ((double)canvas->h) / canvas->yres;
+ }
+}
+
+static cdAttribute size_attrib =
+{
+ "SIZE",
+ set_size_attrib,
+ NULL
+};
+
+static char* get_version_attrib(cdCtxCanvas* ctxcanvas)
+{
+ (void)ctxcanvas;
+ return (char*)glGetString(GL_VERSION);
+}
+
+static cdAttribute version_attrib =
+{
+ "GLVERSION",
+ NULL,
+ get_version_attrib
+};
+
+static void cdcreatecanvas(cdCanvas* canvas, void *data)
+{
+ cdCtxCanvas* ctxcanvas;
+ int w = 0, h = 0;
+ float res = (float)3.78;
+ char* str_data = (char*)data;
+
+ sscanf(str_data, "%dx%d %g", &w, &h, &res);
+
+ if (w == 0 || h == 0)
+ return;
+
+ ctxcanvas = (cdCtxCanvas *)malloc(sizeof(cdCtxCanvas));
+ memset(ctxcanvas, 0, sizeof(cdCtxCanvas));
+
+ canvas->xres = res;
+ canvas->yres = res;
+
+ canvas->w_mm = ((double)canvas->w) / canvas->xres;
+ canvas->h_mm = ((double)canvas->h) / canvas->yres;
+
+ ctxcanvas->canvas = canvas;
+ canvas->ctxcanvas = ctxcanvas;
+
+ ctxcanvas->glLastConvertUTF8 = NULL;
+
+ cdRegisterAttribute(canvas, &rotate_attrib);
+ cdRegisterAttribute(canvas, &version_attrib);
+ cdRegisterAttribute(canvas, &poly_attrib);
+ cdRegisterAttribute(canvas, &size_attrib);
+}
+
+static void cdinittable(cdCanvas* canvas)
+{
+ canvas->cxFlush = cdflush;
+ canvas->cxClear = cdclear;
+
+ canvas->cxPixel = cdpixel;
+ canvas->cxLine = cdline;
+ canvas->cxPoly = cdpoly;
+ canvas->cxRect = cdrect;
+ canvas->cxBox = cdbox;
+ canvas->cxArc = cdSimArc;
+ canvas->cxSector = cdSimSector;
+ canvas->cxChord = cdSimChord;
+
+ canvas->cxText = cdtext;
+ canvas->cxFont = cdfont;
+ canvas->cxGetFontDim = cdgetfontdim;
+ canvas->cxGetTextSize = cdgettextsize;
+
+ canvas->cxClip = cdclip;
+ canvas->cxClipArea = cdcliparea;
+ canvas->cxWriteMode = cdwritemode;
+ canvas->cxLineStyle = cdlinestyle;
+ canvas->cxLineWidth = cdlinewidth;
+ canvas->cxBackOpacity = cdbackopacity;
+ canvas->cxInteriorStyle = cdinteriorstyle;
+ canvas->cxHatch = cdhatch;
+ canvas->cxForeground = cdforeground;
+ canvas->cxTransform = cdtransform;
+
+ canvas->cxFLine = cdfline;
+ canvas->cxFPoly = cdfpoly;
+ canvas->cxFRect = cdfrect;
+ canvas->cxFBox = cdfbox;
+ canvas->cxFArc = cdfSimArc;
+ canvas->cxFSector = cdfSimSector;
+ canvas->cxFChord = cdfSimChord;
+ canvas->cxFText = cdftext;
+ canvas->cxFClipArea = cdfcliparea;
+
+ canvas->cxScrollArea = cdscrollarea;
+ canvas->cxCreateImage = cdcreateimage;
+ canvas->cxGetImage = cdgetimage;
+ canvas->cxPutImageRect = cdputimagerect;
+ canvas->cxKillImage = cdkillimage;
+
+ canvas->cxGetImageRGB = cdgetimagergb;
+ canvas->cxPutImageRectRGB = cdputimagerectrgb;
+ canvas->cxPutImageRectMap = cdputimagerectmap;
+ canvas->cxPutImageRectRGBA = cdputimagerectrgba;
+
+ canvas->cxKillCanvas = cdkillcanvas;
+}
+
+static cdContext cdGLContext =
+{
+ CD_CAP_ALL & ~(CD_CAP_PLAY | CD_CAP_PALETTE | CD_CAP_LINEJOIN | CD_CAP_LINECAP |
+ CD_CAP_REGION | CD_CAP_STIPPLE | CD_CAP_PATTERN),
+ 0,
+ cdcreatecanvas,
+ cdinittable,
+ NULL,
+ NULL,
+};
+
+cdContext* cdContextGL(void)
+{
+ return &cdGLContext;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-02 22:53:25 +0000