- // The following bit is taken from the printing sample, let's see
- // whether it works for us.
-
- /* You might use THIS code to set the printer DC to ROUGHLY reflect
- * the screen text size. This page also draws lines of actual length 5cm
- * on the page.
- */
- // Get the logical pixels per inch of screen and printer
- int ppiScreenX, ppiScreenY;
- GetPPIScreen(&ppiScreenX, &ppiScreenY);
- int ppiPrinterX, ppiPrinterY;
- GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
-
- if(ppiScreenX == 0) // not yet set, need to guess
- {
- ppiScreenX = 100;
- ppiScreenY = 100;
- }
- if(ppiPrinterX == 0) // not yet set, need to guess
- {
- ppiPrinterX = 72;
- ppiPrinterY = 72;
- }
-
- // This scales the DC so that the printout roughly represents the
- // the screen scaling. The text point size _should_ be the right size
- // but in fact is too small for some reason. This is a detail that will
- // need to be addressed at some point but can be fudged for the
- // moment.
- float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
-
- // Now we have to check in case our real page size is reduced
- // (e.g. because we're drawing to a print preview memory DC)
- int pageWidth, pageHeight;
- int w, h;
- dc->GetSize(&w, &h);
- GetPageSizePixels(&pageWidth, &pageHeight);
- if(pageWidth != 0) // doesn't work always
- {
- // If printer pageWidth == current DC width, then this doesn't
- // change. But w might be the preview bitmap width, so scale down.
- scale = scale * (float)(w/(float)pageWidth);
- }
- dc->SetUserScale(scale, scale);
- return scale;
+ // The following bit is taken from the printing sample, let's see
+ // whether it works for us.
+
+ /* You might use THIS code to set the printer DC to ROUGHLY reflect
+ * the screen text size. This page also draws lines of actual length 5cm
+ * on the page.
+ */
+
+ // Get the logical pixels per inch of screen and printer
+ int ppiScreenX, ppiScreenY;
+ GetPPIScreen(&ppiScreenX, &ppiScreenY);
+ int ppiPrinterX, ppiPrinterY;
+ GetPPIPrinter(&ppiPrinterX, &ppiPrinterY);
+
+ if(ppiScreenX == 0) // not yet set, need to guess
+ {
+ ppiScreenX = 100;
+ ppiScreenY = 100;
+ }
+ wxUnusedVar(ppiScreenY);
+
+ if(ppiPrinterX == 0) // not yet set, need to guess
+ {
+ ppiPrinterX = 72;
+ ppiPrinterY = 72;
+ }
+ wxUnusedVar(ppiPrinterY);
+
+ // This scales the DC so that the printout roughly represents the
+ // the screen scaling. The text point size _should_ be the right size
+ // but in fact is too small for some reason. This is a detail that will
+ // need to be addressed at some point but can be fudged for the
+ // moment.
+ float scale = (float)((float)ppiPrinterX/(float)ppiScreenX);
+
+ // Now we have to check in case our real page size is reduced
+ // (e.g. because we're drawing to a print preview memory DC)
+ int pageWidth, pageHeight;
+ int w, h;
+ dc->GetSize(&w, &h);
+ GetPageSizePixels(&pageWidth, &pageHeight);
+ wxUnusedVar(pageHeight);
+ if(pageWidth != 0) // doesn't work always
+ {
+ // If printer pageWidth == current DC width, then this doesn't
+ // change. But w might be the preview bitmap width, so scale down.
+ scale = scale * (float)(w/(float)pageWidth);
+ }
+
+ dc->SetUserScale(scale, scale);
+ return scale;
projects / wxWidgets.git / blobdiff