/*
+ * Copyright (C) 2009 Juanjo Marín <juanj.marin@juntadeandalucia.es>
* Copyright (c) 2007 Carlos Garcia Campos <carlosgc@gnome.org>
* Copyright (C) 2000-2003 Marco Pesenti Gritti
*
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
#include <config.h>
-#include "ev-document-misc.h"
+
#include <string.h>
+#include <math.h>
+
#include <gtk/gtk.h>
+#include "ev-document-misc.h"
+
/* Returns a new GdkPixbuf that is suitable for placing in the thumbnail view.
* It is four pixels wider and taller than the source. If source_pixbuf is not
* NULL, then it will fill the return pixbuf with the contents of
* source_pixbuf.
*/
-GdkPixbuf *
-ev_document_misc_get_thumbnail_frame (int width,
- int height,
- GdkPixbuf *source_pixbuf)
+static GdkPixbuf *
+create_thumbnail_frame (int width,
+ int height,
+ GdkPixbuf *source_pixbuf,
+ gboolean fill_bg)
{
GdkPixbuf *retval;
guchar *data;
rowstride = gdk_pixbuf_get_rowstride (retval);
gdk_pixbuf_fill (retval, 0x000000ff);
- for (i = 1; i < height_r + 1; i++)
- memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
+ if (fill_bg) {
+ for (i = 1; i < height_r + 1; i++)
+ memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
+ }
/* copy the source pixbuf */
if (source_pixbuf)
return retval;
}
+GdkPixbuf *
+ev_document_misc_get_thumbnail_frame (int width,
+ int height,
+ GdkPixbuf *source_pixbuf)
+{
+ return create_thumbnail_frame (width, height, source_pixbuf, TRUE);
+}
+
+GdkPixbuf *
+ev_document_misc_get_loading_thumbnail (int width,
+ int height,
+ gboolean inverted_colors)
+{
+ return create_thumbnail_frame (width, height, NULL, !inverted_colors);
+}
+
void
ev_document_misc_get_page_border_size (gint page_width,
gint page_height,
GtkWidget *widget,
GdkRectangle *area,
GtkBorder *border,
- gboolean highlight)
+ gboolean highlight,
+ gboolean inverted_colors)
{
+ GtkStyle *style = gtk_widget_get_style (widget);
+ GtkStateType state = gtk_widget_get_state (widget);
+
gdk_draw_rectangle (drawable,
- highlight ?
- widget->style->text_gc[widget->state] : widget->style->dark_gc[widget->state],
+ highlight ? style->text_gc[state] : style->dark_gc[state],
TRUE,
area->x,
area->y,
area->width,
area->height);
gdk_draw_rectangle (drawable,
- widget->style->white_gc,
+ inverted_colors ? style->black_gc : style->white_gc,
TRUE,
area->x + border->left,
area->y + border->top,
area->width - (border->left + border->right),
area->height - (border->top + border->bottom));
gdk_draw_rectangle (drawable,
- widget->style->mid_gc[widget->state],
+ style->mid_gc[state],
TRUE,
area->x,
area->y + area->height - (border->bottom - border->top),
border->bottom - border->top,
border->bottom - border->top);
gdk_draw_rectangle (drawable,
- widget->style->mid_gc[widget->state],
+ style->mid_gc[state],
TRUE,
area->x + area->width - (border->right - border->left),
area->y,
p[3] = (has_alpha) ? p[3] : 0xff;
#else
tmp = p[0];
- p[0] = (has_alpha) ? p[3] : 0xff;
- p[3] = p[2];
- p[2] = p[1];
- p[1] = tmp;
+ p[0] = p[1];
+ p[1] = p[2];
+ p[2] = p[3];
+ p[3] = (has_alpha) ? tmp : 0xff;
#endif
p += pixbuf_n_channels;
}
return new_surface;
}
-
+
+void
+ev_document_misc_invert_surface (cairo_surface_t *surface) {
+#if CAIRO_VERSION > CAIRO_VERSION_ENCODE(1, 9, 2)
+ cairo_t *cr;
+
+ cr = cairo_create (surface);
+
+ /* white + DIFFERENCE -> invert */
+ cairo_set_operator (cr, CAIRO_OPERATOR_DIFFERENCE);
+ cairo_set_source_rgb (cr, 1., 1., 1.);
+ cairo_paint(cr);
+ cairo_destroy (cr);
+#else
+ guchar *data;
+ gint rowstride;
+ gint width, height;
+ gint x, y;
+
+ data = cairo_image_surface_get_data (surface);
+ rowstride = cairo_image_surface_get_stride (surface);
+ width = cairo_image_surface_get_width (surface);
+ height = cairo_image_surface_get_height (surface);
+
+ for (y = 0; y < height; y++) {
+ guchar *p = data + y * rowstride;
+
+ for (x = 0; x < width; x++) {
+ p[0] = 255 - p[0];
+ p[1] = 255 - p[1];
+ p[2] = 255 - p[2];
+ p += 4;
+ }
+ }
+
+ cairo_surface_mark_dirty (surface);
+#endif
+}
+
+void
+ev_document_misc_invert_pixbuf (GdkPixbuf *pixbuf)
+{
+ guchar *data, *p;
+ guint width, height, x, y, rowstride, n_channels;
+
+ n_channels = gdk_pixbuf_get_n_channels (pixbuf);
+ g_assert (gdk_pixbuf_get_colorspace (pixbuf) == GDK_COLORSPACE_RGB);
+ g_assert (gdk_pixbuf_get_bits_per_sample (pixbuf) == 8);
+
+ /* First grab a pointer to the raw pixel data. */
+ data = gdk_pixbuf_get_pixels (pixbuf);
+
+ /* Find the number of bytes per row (could be padded). */
+ rowstride = gdk_pixbuf_get_rowstride (pixbuf);
+
+ width = gdk_pixbuf_get_width (pixbuf);
+ height = gdk_pixbuf_get_height (pixbuf);
+ for (x = 0; x < width; x++) {
+ for (y = 0; y < height; y++) {
+ /* Calculate pixel's offset into the data array. */
+ p = data + x * n_channels + y * rowstride;
+ /* Change the RGB values*/
+ p[0] = 255 - p[0];
+ p[1] = 255 - p[1];
+ p[2] = 255 - p[2];
+ }
+ }
+}
+
+gdouble
+ev_document_misc_get_screen_dpi (GdkScreen *screen)
+{
+ gdouble dp, di;
+
+ /*diagonal in pixels*/
+ dp = hypot (gdk_screen_get_width (screen), gdk_screen_get_height (screen));
+
+ /*diagonal in inches*/
+ di = hypot (gdk_screen_get_width_mm(screen), gdk_screen_get_height_mm (screen)) / 25.4;
+
+ return (dp / di);
+}
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff