Create Fl_Cairo_Graphics_Driver::handle_dummy_cairo(cairo_t *cr).

2 files changed, 16 insertions, 4 deletions

diff --git a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H
index 00ae55e61..d35d51804 100644
--- a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H
+++ b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.H
@@ -41,10 +41,11 @@ class FL_EXPORT Fl_Cairo_Graphics_Driver : public Fl_Graphics_Driver {
 private:
   bool *needs_commit_tag_; // NULL or points to whether cairo surface was drawn to
 protected:
-  PangoLayout *dummy_pango_layout_; // used to measure text width before showing a window
+  cairo_t *dummy_cairo_; // used to measure text width before showing a window
   cairo_t *cairo_;
   PangoLayout *pango_layout_;
   int linestyle_;
+  void handle_dummy_cairo(cairo_t *);
 public:
   Fl_Cairo_Graphics_Driver();
   virtual ~Fl_Cairo_Graphics_Driver();
diff --git a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
index 8651f3887..029a2eb4f 100644
--- a/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
+++ b/src/drivers/Cairo/Fl_Cairo_Graphics_Driver.cxx
@@ -69,7 +69,7 @@ static void draw_image_cb(void *data, int x, int y, int w, uchar *buf) {
 Fl_Cairo_Graphics_Driver::Fl_Cairo_Graphics_Driver() : Fl_Graphics_Driver() {
   cairo_ = NULL;
   pango_layout_ = NULL;
-  dummy_pango_layout_ = NULL;
+  dummy_cairo_ = NULL;
   linestyle_ = FL_SOLID;
   clip_ = NULL;
   scale_x = scale_y = 1;
@@ -85,6 +85,15 @@ Fl_Cairo_Graphics_Driver::~Fl_Cairo_Graphics_Driver() {
 const cairo_format_t Fl_Cairo_Graphics_Driver::cairo_format = CAIRO_FORMAT_ARGB32;
 
 
+void Fl_Cairo_Graphics_Driver::handle_dummy_cairo(cairo_t *cr) {
+  pango_cairo_update_layout(cr, pango_layout_); // 1.10
+  cairo_surface_t *surf = cairo_get_target(dummy_cairo_);
+  cairo_destroy(dummy_cairo_);
+  cairo_surface_destroy(surf);
+  dummy_cairo_ = NULL;
+}
+
+
 void Fl_Cairo_Graphics_Driver::rectf(int x, int y, int w, int h) {
   cairo_rectangle(cairo_, x-0.5, y-0.5, w, h);
   cairo_fill(cairo_);
@@ -1078,8 +1087,10 @@ void Fl_Cairo_Graphics_Driver::font(Fl_Font fnum, Fl_Fontsize s) {
       cairo_surface_t *surf = cairo_image_surface_create(Fl_Cairo_Graphics_Driver::cairo_format, 100, 100);
       cairo_ = cairo_create(surf);
     }
-    pango_layout_ = pango_cairo_create_layout(cairo_);
-    if (needs_dummy) dummy_pango_layout_ = pango_layout_;
+    pango_layout_ = pango_cairo_create_layout(cairo_); // 1.10
+    if (needs_dummy) {
+      dummy_cairo_ = cairo_;
+    }
   }
   if (s == 0) return;
   if (font() == fnum && size() == s) return;