aboutsummaryrefslogtreecommitdiff
path: root/gnu/packages/patches/inkscape-poppler-compat3.patch
blob: eaaf7d93f1f15593655009530eaf3ddca777ae29 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
Fix compatibility with Poppler >= 0.69.

This is a combination of these upstream commits:
https://gitlab.com/inkscape/inkscape/commit/722e121361d0f784083d10e897155b7d4e44e515
https://gitlab.com/inkscape/inkscape/commit/402c0274420fe39fd2f3393bc7d8d8879d436358

...with slight adjustments for the 0.92.3 release tarball.

diff --git a/CMakeScripts/DefineDependsandFlags.cmake b/CMakeScripts/DefineDependsandFlags.cmake
--- a/CMakeScripts/DefineDependsandFlags.cmake
+++ b/CMakeScripts/DefineDependsandFlags.cmake
@@ -116,18 +116,6 @@ if(ENABLE_POPPLER)
 		set(HAVE_POPPLER_GLIB ON)
 	    endif()
 	endif()
-	if(POPPLER_VERSION VERSION_GREATER "0.26.0" OR
-		POPPLER_VERSION VERSION_EQUAL   "0.26.0")
-	    set(POPPLER_EVEN_NEWER_COLOR_SPACE_API ON)
-	endif()
-	if(POPPLER_VERSION VERSION_GREATER "0.29.0" OR
-		POPPLER_VERSION VERSION_EQUAL   "0.29.0")
-	    set(POPPLER_EVEN_NEWER_NEW_COLOR_SPACE_API ON)
-	endif()
-	if(POPPLER_VERSION VERSION_GREATER "0.58.0" OR
-		POPPLER_VERSION VERSION_EQUAL   "0.58.0")
-            set(POPPLER_NEW_OBJECT_API ON)
-	endif()
     else()
 	set(ENABLE_POPPLER_CAIRO OFF)
     endif()
diff --git a/src/extension/internal/pdfinput/pdf-input.cpp b/src/extension/internal/pdfinput/pdf-input.cpp
--- a/src/extension/internal/pdfinput/pdf-input.cpp
+++ b/src/extension/internal/pdfinput/pdf-input.cpp
@@ -793,7 +793,7 @@ PdfInput::open(::Inkscape::Extension::Input * /*mod*/, const gchar * uri) {
             dlg->getImportSettings(prefs);
 
         // Apply crop settings
-        PDFRectangle *clipToBox = NULL;
+        _POPPLER_CONST PDFRectangle *clipToBox = NULL;
         double crop_setting;
         sp_repr_get_double(prefs, "cropTo", &crop_setting);
 
diff --git a/src/extension/internal/pdfinput/pdf-input.h b/src/extension/internal/pdfinput/pdf-input.h
--- a/src/extension/internal/pdfinput/pdf-input.h
+++ b/src/extension/internal/pdfinput/pdf-input.h
@@ -15,6 +15,7 @@
 #endif
 
 #ifdef HAVE_POPPLER
+#include "poppler-transition-api.h"
 
 #include <gtkmm/dialog.h>
 
diff --git a/src/extension/internal/pdfinput/pdf-parser.cpp b/src/extension/internal/pdfinput/pdf-parser.cpp
--- a/src/extension/internal/pdfinput/pdf-parser.cpp
+++ b/src/extension/internal/pdfinput/pdf-parser.cpp
@@ -36,6 +36,7 @@ extern "C" {
 #include "pdf-parser.h"
 #include "util/units.h"
 
+#include "glib/poppler-features.h"
 #include "goo/gmem.h"
 #include "goo/GooString.h"
 #include "GlobalParams.h"
@@ -294,8 +295,8 @@ PdfParser::PdfParser(XRef *xrefA,
                      int /*pageNum*/,
 		     int rotate,
 		     Dict *resDict,
-                     PDFRectangle *box,
-		     PDFRectangle *cropBox) :
+                     _POPPLER_CONST PDFRectangle *box,
+                     _POPPLER_CONST PDFRectangle *cropBox) :
     xref(xrefA),
     builder(builderA),
     subPage(gFalse),
@@ -317,7 +318,7 @@ PdfParser::PdfParser(XRef *xrefA,
   builder->setDocumentSize(Inkscape::Util::Quantity::convert(state->getPageWidth(), "pt", "px"),
                            Inkscape::Util::Quantity::convert(state->getPageHeight(), "pt", "px"));
 
-  double *ctm = state->getCTM();
+  const double *ctm = state->getCTM();
   double scaledCTM[6];
   for (int i = 0; i < 6; ++i) {
     baseMatrix[i] = ctm[i];
@@ -352,7 +353,7 @@ PdfParser::PdfParser(XRef *xrefA,
 PdfParser::PdfParser(XRef *xrefA,
 		     Inkscape::Extension::Internal::SvgBuilder *builderA,
                      Dict *resDict,
-		     PDFRectangle *box) :
+		     _POPPLER_CONST PDFRectangle *box) :
     xref(xrefA),
     builder(builderA),
     subPage(gTrue),
@@ -571,7 +572,7 @@ const char *PdfParser::getPreviousOperator(unsigned int look_back) {
 
 void PdfParser::execOp(Object *cmd, Object args[], int numArgs) {
   PdfOperator *op;
-  char *name;
+  const char *name;
   Object *argPtr;
   int i;
 
@@ -619,7 +620,7 @@ void PdfParser::execOp(Object *cmd, Object args[], int numArgs) {
   (this->*op->func)(argPtr, numArgs);
 }
 
-PdfOperator* PdfParser::findOp(char *name) {
+PdfOperator* PdfParser::findOp(const char *name) {
   int a = -1;
   int b = numOps;
   int cmp = -1;
@@ -1751,7 +1752,7 @@ void PdfParser::doShadingPatternFillFallback(GfxShadingPattern *sPat,
                                              GBool stroke, GBool eoFill) {
   GfxShading *shading;
   GfxPath *savedPath;
-  double *ctm, *btm, *ptm;
+  const double *ctm, *btm, *ptm;
   double m[6], ictm[6], m1[6];
   double xMin, yMin, xMax, yMax;
   double det;
@@ -1993,7 +1994,7 @@ void PdfParser::doFunctionShFill1(GfxFunctionShading *shading,
   GfxColor color0M, color1M, colorM0, colorM1, colorMM;
   GfxColor colors2[4];
   double functionColorDelta = colorDeltas[pdfFunctionShading-1];
-  double *matrix;
+  const double *matrix;
   double xM, yM;
   int nComps, i, j;
 
@@ -2173,7 +2174,7 @@ void PdfParser::doPatchMeshShFill(GfxPatchMeshShading *shading) {
   }
 }
 
-void PdfParser::fillPatch(GfxPatch *patch, int nComps, int depth) {
+void PdfParser::fillPatch(_POPPLER_CONST GfxPatch *patch, int nComps, int depth) {
   GfxPatch patch00 = blankPatch();
   GfxPatch patch01 = blankPatch();
   GfxPatch patch10 = blankPatch();
@@ -2581,7 +2582,11 @@ void PdfParser::opShowSpaceText(Object args[], int /*numArgs*/)
   }
 }
 
+#if POPPLER_CHECK_VERSION(0,64,0)
 void PdfParser::doShowText(const GooString *s) {
+#else
+void PdfParser::doShowText(GooString *s) {
+#endif
   GfxFont *font;
   int wMode;
   double riseX, riseY;
@@ -2590,11 +2595,15 @@ void PdfParser::doShowText(const GooString *s) {
   double x, y, dx, dy, tdx, tdy;
   double originX, originY, tOriginX, tOriginY;
   double oldCTM[6], newCTM[6];
-  double *mat;
+  const double *mat;
   Object charProc;
   Dict *resDict;
   Parser *oldParser;
+#if POPPLER_CHECK_VERSION(0,64,0)
+  const char *p;
+#else
   char *p;
+#endif
   int len, n, uLen;
 
   font = state->getFont();
@@ -2630,7 +2639,7 @@ void PdfParser::doShowText(const GooString *s) {
     double lineX = state->getLineX();
     double lineY = state->getLineY();
     oldParser = parser;
-    p = g_strdup(s->getCString());
+    p = s->getCString();
     len = s->getLength();
     while (len > 0) {
       n = font->getNextChar(p, len, &code,
@@ -2685,7 +2694,7 @@ void PdfParser::doShowText(const GooString *s) {
 
   } else {
     state->textTransformDelta(0, state->getRise(), &riseX, &riseY);
-    p = g_strdup(s->getCString());
+    p = s->getCString();
     len = s->getLength();
     while (len > 0) {
       n = font->getNextChar(p, len, &code,
@@ -2731,7 +2740,11 @@ void PdfParser::opXObject(Object args[], int /*numArgs*/)
 {
   Object obj1, obj2, obj3, refObj;
 
-  char *name = g_strdup(args[0].getName());
+#if POPPLER_CHECK_VERSION(0,64,0)
+  const char *name = args[0].getName();
+#else
+  char *name = args[0].getName();
+#endif
 #if defined(POPPLER_NEW_OBJECT_API)
   if ((obj1 = res->lookupXObject(name)).isNull()) {
 #else
@@ -3656,7 +3669,6 @@ void PdfParser::opBeginImage(Object /*args*/[], int /*numArgs*/)
 Stream *PdfParser::buildImageStream() {
   Object dict;
   Object obj;
-  char *key;
   Stream *str;
 
   // build dictionary
@@ -3674,26 +3686,17 @@ Stream *PdfParser::buildImageStream() {
       obj.free();
 #endif
     } else {
-      key = copyString(obj.getName());
-#if defined(POPPLER_NEW_OBJECT_API)
-      obj = parser->getObj();
-#else
-      obj.free();
-      parser->getObj(&obj);
-#endif
-      if (obj.isEOF() || obj.isError()) {
-	gfree(key);
+      Object obj2;
+      _POPPLER_CALL(obj2, parser->getObj);
+      if (obj2.isEOF() || obj2.isError()) {
+        _POPPLER_FREE(obj);
 	break;
       }
-#if defined(POPPLER_NEW_OBJECT_API)
-      dict.dictAdd(key, std::move(obj));
-    }
-    obj = parser->getObj();
-#else
-      dict.dictAdd(key, &obj);
+      _POPPLER_DICTADD(dict, obj.getName(), obj2);
+      _POPPLER_FREE(obj);
+      _POPPLER_FREE(obj2);
     }
-    parser->getObj(&obj);
-#endif
+    _POPPLER_CALL(obj, parser->getObj);
   }
   if (obj.isEOF()) {
     error(errSyntaxError, getPos(), "End of file in inline image");
diff --git a/src/extension/internal/pdfinput/pdf-parser.h b/src/extension/internal/pdfinput/pdf-parser.h
--- a/src/extension/internal/pdfinput/pdf-parser.h
+++ b/src/extension/internal/pdfinput/pdf-parser.h
@@ -9,6 +9,7 @@
 #define PDF_PARSER_H
 
 #ifdef HAVE_POPPLER
+#include "poppler-transition-api.h"
 
 #ifdef USE_GCC_PRAGMAS
 #pragma interface
@@ -25,6 +26,7 @@ namespace Inkscape {
 // TODO clean up and remove using:
 using Inkscape::Extension::Internal::SvgBuilder;
 
+#include "glib/poppler-features.h"
 #include "goo/gtypes.h"
 #include "Object.h"
 
@@ -127,11 +129,14 @@ public:
 
   // Constructor for regular output.
   PdfParser(XRef *xrefA, SvgBuilder *builderA, int pageNum, int rotate,
-            Dict *resDict, PDFRectangle *box, PDFRectangle *cropBox);
+            Dict *resDict,
+            _POPPLER_CONST PDFRectangle *box,
+            _POPPLER_CONST PDFRectangle *cropBox);
 
   // Constructor for a sub-page object.
   PdfParser(XRef *xrefA, Inkscape::Extension::Internal::SvgBuilder *builderA,
-            Dict *resDict, PDFRectangle *box);
+            Dict *resDict,
+            _POPPLER_CONST PDFRectangle *box);
 
   virtual ~PdfParser();
 
@@ -185,7 +190,7 @@ private:
 
   void go(GBool topLevel);
   void execOp(Object *cmd, Object args[], int numArgs);
-  PdfOperator *findOp(char *name);
+  PdfOperator *findOp(const char *name);
   GBool checkArg(Object *arg, TchkType type);
   int getPos();
 
@@ -256,7 +261,7 @@ private:
 			   double x2, double y2, GfxColor *color2,
 			   int nComps, int depth);
   void doPatchMeshShFill(GfxPatchMeshShading *shading);
-  void fillPatch(GfxPatch *patch, int nComps, int depth);
+  void fillPatch(_POPPLER_CONST GfxPatch *patch, int nComps, int depth);
   void doEndPath();
 
   // path clipping operators
@@ -287,7 +292,12 @@ private:
   void opMoveShowText(Object args[], int numArgs);
   void opMoveSetShowText(Object args[], int numArgs);
   void opShowSpaceText(Object args[], int numArgs);
+#if POPPLER_CHECK_VERSION(0,64,0)
   void doShowText(const GooString *s);
+#else
+  void doShowText(GooString *s);
+#endif
+  
 
   // XObject operators
   void opXObject(Object args[], int numArgs);
diff --git a/src/extension/internal/pdfinput/poppler-transition-api.h b/src/extension/internal/pdfinput/poppler-transition-api.h
new file mode 100644
--- /dev/null
+++ b/src/extension/internal/pdfinput/poppler-transition-api.h
@@ -0,0 +1,39 @@
+#ifndef SEEN_POPPLER_TRANSITION_API_H
+#define SEEN_POPPLER_TRANSITION_API_H
+
+#include <glib/poppler-features.h>
+
+#if POPPLER_CHECK_VERSION(0,70,0)
+#define _POPPLER_CONST const
+#else
+#define _POPPLER_CONST
+#endif
+
+#if POPPLER_CHECK_VERSION(0,69,0)
+#define _POPPLER_DICTADD(dict, key, obj) (dict).dictAdd(key, std::move(obj))
+#elif POPPLER_CHECK_VERSION(0,58,0)
+#define _POPPLER_DICTADD(dict, key, obj) (dict).dictAdd(copyString(key), std::move(obj))
+#else
+#define _POPPLER_DICTADD(dict, key, obj) (dict).dictAdd(copyString(key), &obj)
+#endif
+
+#if POPPLER_CHECK_VERSION(0,58,0)
+#define POPPLER_NEW_OBJECT_API
+#define _POPPLER_FREE(obj)
+#define _POPPLER_CALL(ret, func) (ret = func())
+#define _POPPLER_CALL_ARGS(ret, func, ...) (ret = func(__VA_ARGS__))
+#else
+#define _POPPLER_FREE(obj) (obj).free()
+#define _POPPLER_CALL(ret, func) (*func(&ret))
+#define _POPPLER_CALL_ARGS(ret, func, ...) (*func(__VA_ARGS__, &ret))
+#endif
+
+#if POPPLER_CHECK_VERSION(0, 29, 0)
+#define POPPLER_EVEN_NEWER_NEW_COLOR_SPACE_API
+#endif
+
+#if POPPLER_CHECK_VERSION(0, 25, 0)
+#define POPPLER_EVEN_NEWER_COLOR_SPACE_API
+#endif
+
+#endif
diff --git a/src/extension/internal/pdfinput/svg-builder.cpp b/src/extension/internal/pdfinput/svg-builder.cpp
--- a/src/extension/internal/pdfinput/svg-builder.cpp
+++ b/src/extension/internal/pdfinput/svg-builder.cpp
@@ -625,7 +625,7 @@ gchar *SvgBuilder::_createPattern(GfxPattern *pattern, GfxState *state, bool is_
     if ( pattern != NULL ) {
         if ( pattern->getType() == 2 ) {  // Shading pattern
             GfxShadingPattern *shading_pattern = static_cast<GfxShadingPattern *>(pattern);
-            double *ptm;
+            const double *ptm;
             double m[6] = {1, 0, 0, 1, 0, 0};
             double det;
 
@@ -672,7 +672,7 @@ gchar *SvgBuilder::_createTilingPattern(GfxTilingPattern *tiling_pattern,
 
     Inkscape::XML::Node *pattern_node = _xml_doc->createElement("svg:pattern");
     // Set pattern transform matrix
-    double *p2u = tiling_pattern->getMatrix();
+    const double *p2u = tiling_pattern->getMatrix();
     double m[6] = {1, 0, 0, 1, 0, 0};
     double det;
     det = _ttm[0] * _ttm[3] - _ttm[1] * _ttm[2];    // see LP Bug 1168908
@@ -698,7 +698,7 @@ gchar *SvgBuilder::_createTilingPattern(GfxTilingPattern *tiling_pattern,
     pattern_node->setAttribute("patternUnits", "userSpaceOnUse");
     // Set pattern tiling
     // FIXME: don't ignore XStep and YStep
-    double *bbox = tiling_pattern->getBBox();
+    const double *bbox = tiling_pattern->getBBox();
     sp_repr_set_svg_double(pattern_node, "x", 0.0);
     sp_repr_set_svg_double(pattern_node, "y", 0.0);
     sp_repr_set_svg_double(pattern_node, "width", bbox[2] - bbox[0]);
@@ -751,7 +751,7 @@ gchar *SvgBuilder::_createTilingPattern(GfxTilingPattern *tiling_pattern,
  */
 gchar *SvgBuilder::_createGradient(GfxShading *shading, double *matrix, bool for_shading) {
     Inkscape::XML::Node *gradient;
-    Function *func;
+    _POPPLER_CONST Function *func;
     int num_funcs;
     bool extend0, extend1;
 
@@ -865,7 +865,7 @@ static bool svgGetShadingColorRGB(GfxShading *shading, double offset, GfxRGB *re
 
 #define INT_EPSILON 8
 bool SvgBuilder::_addGradientStops(Inkscape::XML::Node *gradient, GfxShading *shading,
-                                   Function *func) {
+                                   _POPPLER_CONST Function *func) {
     int type = func->getType();
     if ( type == 0 || type == 2 ) {  // Sampled or exponential function
         GfxRGB stop1, stop2;
@@ -877,9 +877,9 @@ bool SvgBuilder::_addGradientStops(Inkscape::XML::Node *gradient, GfxShading *sh
             _addStopToGradient(gradient, 1.0, &stop2, 1.0);
         }
     } else if ( type == 3 ) { // Stitching
-        StitchingFunction *stitchingFunc = static_cast<StitchingFunction*>(func);
-        double *bounds = stitchingFunc->getBounds();
-        double *encode = stitchingFunc->getEncode();
+        auto stitchingFunc = static_cast<_POPPLER_CONST StitchingFunction*>(func);
+        const double *bounds = stitchingFunc->getBounds();
+        const double *encode = stitchingFunc->getEncode();
         int num_funcs = stitchingFunc->getNumFuncs();
 
         // Add stops from all the stitched functions
@@ -890,7 +890,7 @@ bool SvgBuilder::_addGradientStops(Inkscape::XML::Node *gradient, GfxShading *sh
             svgGetShadingColorRGB(shading, bounds[i + 1], &color);
             // Add stops
             if (stitchingFunc->getFunc(i)->getType() == 2) {    // process exponential fxn
-                double expE = (static_cast<ExponentialFunction*>(stitchingFunc->getFunc(i)))->getE();
+                double expE = (static_cast<_POPPLER_CONST ExponentialFunction*>(stitchingFunc->getFunc(i)))->getE();
                 if (expE > 1.0) {
                     expE = (bounds[i + 1] - bounds[i])/expE;    // approximate exponential as a single straight line at x=1
                     if (encode[2*i] == 0) {    // normal sequence
@@ -1020,9 +1020,9 @@ void SvgBuilder::updateFont(GfxState *state) {
     GfxFont *font = state->getFont();
     // Store original name
     if (font->getName()) {
-        _font_specification = g_strdup(font->getName()->getCString());
+        _font_specification = font->getName()->getCString();
     } else {
-        _font_specification = (char*) "Arial";
+        _font_specification = "Arial";
     }
 
     // Prune the font name to get the correct font family name
@@ -1030,7 +1030,7 @@ void SvgBuilder::updateFont(GfxState *state) {
     char *font_family = NULL;
     char *font_style = NULL;
     char *font_style_lowercase = NULL;
-    char *plus_sign = strstr(_font_specification, "+");
+    const char *plus_sign = strstr(_font_specification, "+");
     if (plus_sign) {
         font_family = g_strdup(plus_sign + 1);
         _font_specification = plus_sign + 1;
@@ -1148,7 +1148,7 @@ void SvgBuilder::updateFont(GfxState *state) {
     Inkscape::CSSOStringStream os_font_size;
     double css_font_size = _font_scaling * state->getFontSize();
     if ( font->getType() == fontType3 ) {
-        double *font_matrix = font->getFontMatrix();
+        const double *font_matrix = font->getFontMatrix();
         if ( font_matrix[0] != 0.0 ) {
             css_font_size *= font_matrix[3] / font_matrix[0];
         }
@@ -1193,7 +1193,7 @@ void SvgBuilder::updateTextPosition(double tx, double ty) {
 void SvgBuilder::updateTextMatrix(GfxState *state) {
     _flushText();
     // Update text matrix
-    double *text_matrix = state->getTextMat();
+    const double *text_matrix = state->getTextMat();
     double w_scale = sqrt( text_matrix[0] * text_matrix[0] + text_matrix[2] * text_matrix[2] );
     double h_scale = sqrt( text_matrix[1] * text_matrix[1] + text_matrix[3] * text_matrix[3] );
     double max_scale;
diff --git a/src/extension/internal/pdfinput/svg-builder.h b/src/extension/internal/pdfinput/svg-builder.h
--- a/src/extension/internal/pdfinput/svg-builder.h
+++ b/src/extension/internal/pdfinput/svg-builder.h
@@ -15,6 +15,7 @@
 #endif
 
 #ifdef HAVE_POPPLER
+#include "poppler-transition-api.h"
 
 class SPDocument;
 namespace Inkscape {
@@ -80,7 +81,7 @@ struct SvgGlyph {
     bool style_changed;  // Set to true if style has to be reset
     SPCSSAttr *style;
     int render_mode;    // Text render mode
-    char *font_specification;   // Pointer to current font specification
+    const char *font_specification;   // Pointer to current font specification
 };
 
 /**
@@ -174,7 +175,7 @@ private:
     void _addStopToGradient(Inkscape::XML::Node *gradient, double offset,
                             GfxRGB *color, double opacity);
     bool _addGradientStops(Inkscape::XML::Node *gradient, GfxShading *shading,
-                           Function *func);
+                           _POPPLER_CONST Function *func);
     gchar *_createTilingPattern(GfxTilingPattern *tiling_pattern, GfxState *state,
                                 bool is_stroke=false);
     // Image/mask creation
@@ -202,7 +203,7 @@ private:
 
     SPCSSAttr *_font_style;          // Current font style
     GfxFont *_current_font;
-    char *_font_specification;
+    const char *_font_specification;
     double _font_scaling;
     bool _need_font_update;
     Geom::Affine _text_matrix;