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Fix scaling to fit paper

This commit is contained in:
Přemysl Eric Janouch 2021-10-28 06:14:21 +02:00
parent bd12c0502a
commit 2bc9fe4f1d
Signed by: p
GPG Key ID: A0420B94F92B9493
1 changed files with 8 additions and 6 deletions
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14
src/ld-window-main.c
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@ -1052,7 +1052,7 @@ on_action_print_draw_page (GtkPrintOperation *operation,
LdDiagramView *view; LdDiagramView *view;
gdouble area_width_mm, area_height_mm; gdouble area_width_mm, area_height_mm;
gdouble diagram_width_mm, diagram_height_mm; gdouble diagram_width_mm, diagram_height_mm;
gdouble diagram_to_export_units, scale; gdouble diagram_to_export_units, scale, width_fit, height_fit;
LdRectangle bounds; LdRectangle bounds;
cr = gtk_print_context_get_cairo_context (context); cr = gtk_print_context_get_cairo_context (context);
@ -1067,11 +1067,13 @@ on_action_print_draw_page (GtkPrintOperation *operation,
diagram_width_mm = bounds.width * scale; diagram_width_mm = bounds.width * scale;
diagram_height_mm = bounds.height * scale; diagram_height_mm = bounds.height * scale;
/* Scale to fit the paper. */ /* Scale to fit the paper, taking care to not divide by zero. */
if (area_width_mm < diagram_width_mm) width_fit = (area_width_mm < diagram_width_mm)
scale *= area_width_mm / diagram_width_mm; ? area_width_mm / diagram_width_mm : 1;
if (area_height_mm < diagram_height_mm) height_fit = (area_height_mm < diagram_height_mm)
scale *= area_height_mm / diagram_height_mm; ? area_height_mm / diagram_height_mm : 1;
scale *= MIN (width_fit, height_fit);
cairo_scale (cr, scale, scale); cairo_scale (cr, scale, scale);
cairo_translate (cr, -bounds.x, -bounds.y); cairo_translate (cr, -bounds.x, -bounds.y);