diff options
Diffstat (limited to 'src/dialogs/export.cpp')
| -rw-r--r-- | src/dialogs/export.cpp | 70 |
1 files changed, 67 insertions, 3 deletions
diff --git a/src/dialogs/export.cpp b/src/dialogs/export.cpp index 54df64782..372430bcd 100644 --- a/src/dialogs/export.cpp +++ b/src/dialogs/export.cpp @@ -73,6 +73,9 @@ static void sp_export_area_height_value_changed ( GtkAdjustment *adj, static void sp_export_bitmap_width_value_changed ( GtkAdjustment *adj, GtkObject *base); +static void sp_export_bitmap_height_value_changed ( GtkAdjustment *adj, + GtkObject *base); + static void sp_export_xdpi_value_changed ( GtkAdjustment *adj, GtkObject *base); @@ -423,9 +426,12 @@ sp_export_dialog (void) G_CALLBACK (sp_export_xdpi_value_changed), dlg ); - sp_export_spinbutton_new ( "bmheight", 16.0, 1.0, 1000000.0, 1, 10.0, - NULL, t, 0, 1, _("Height:"), _("pixels at"), - 0, 0, NULL, dlg ); + sp_export_spinbutton_new ( "bmheight", 16.0, 1.0, 1000000.0, 1.0, 10.0, + NULL, t, 0, 1, + _("Height:"), _("pixels at"), 0, 1, + G_CALLBACK + (sp_export_bitmap_height_value_changed), + dlg ); /** \todo * Needs fixing: there's no way to set ydpi currently, so we use @@ -1495,6 +1501,29 @@ sp_export_set_image_y (GtkObject *base) return; } // end of sp_export_set_image_y() +/** + \brief A function to set the xdpi + \param base The export dialog + + This function grabs all of the x values and then figures out the + new bitmap size based on the changing dpi value. The dpi value is + gotten from the xdpi setting as these can not currently be independent. +*/ +static void +sp_export_set_image_x (GtkObject *base) +{ + float x0, x1, xdpi; + + x0 = sp_export_value_get_px (base, "x0"); + x1 = sp_export_value_get_px (base, "x1"); + xdpi = sp_export_value_get (base, "xdpi"); + + sp_export_value_set (base, "ydpi", xdpi); + sp_export_value_set (base, "bmwidth", (x1 - x0) * xdpi / DPI_BASE); + + return; +} // end of sp_export_set_image_x() + /// Called when pixel width is changed static void sp_export_bitmap_width_value_changed (GtkAdjustment *adj, GtkObject *base) @@ -1530,6 +1559,41 @@ sp_export_bitmap_width_value_changed (GtkAdjustment *adj, GtkObject *base) return; } // end of sp_export_bitmap_width_value_changed() +/// Called when pixel height is changed +static void +sp_export_bitmap_height_value_changed (GtkAdjustment *adj, GtkObject *base) +{ + float y0, y1, bmheight, xdpi; + + if (gtk_object_get_data (base, "update")) + return; + + if (sp_unit_selector_update_test ((SPUnitSelector *)gtk_object_get_data + (base, "units"))) { + return; + } + + gtk_object_set_data (base, "update", GUINT_TO_POINTER (TRUE)); + + y0 = sp_export_value_get_px (base, "y0"); + y1 = sp_export_value_get_px (base, "y1"); + bmheight = sp_export_value_get (base, "bmheight"); + + if (bmheight < SP_EXPORT_MIN_SIZE) { + bmheight = SP_EXPORT_MIN_SIZE; + sp_export_value_set (base, "bmheight", bmheight); + } + + xdpi = bmheight * DPI_BASE / (y1 - y0); + sp_export_value_set (base, "xdpi", xdpi); + + sp_export_set_image_x (base); + + gtk_object_set_data (base, "update", GUINT_TO_POINTER (FALSE)); + + return; +} // end of sp_export_bitmap_width_value_changed() + /** \brief A function to adjust the bitmap width when the xdpi value changes \param adj The adjustment that was changed |