libdocument/ev-document-misc.c

   1
   2 #include "ev-document-misc.h"
   3 #include <string.h>
   4 #include <gtk/gtk.h>
   5
   6 /* Returns a new GdkPixbuf that is suitable for placing in the thumbnail view.
   7  * It is four pixels wider and taller than the source.  If source_pixbuf is not
   8  * NULL, then it will fill the return pixbuf with the contents of
   9  * source_pixbuf.
  10  */
  11
  12 GdkPixbuf *
  13 ev_document_misc_get_thumbnail_frame (int        width,
  14                                       int        height,
  15                                       GdkPixbuf *source_pixbuf)
  16 {
  17         GdkPixbuf *retval;
  18         guchar *data;
  19         gint rowstride;
  20         int i;
  21         int width_r, height_r;
  22
  23         if (source_pixbuf)
  24                 g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
  25
  26         if (source_pixbuf) {
  27                 width_r = gdk_pixbuf_get_width (source_pixbuf);
  28                 height_r = gdk_pixbuf_get_height (source_pixbuf);
  29         } else {
  30                 width_r = width;
  31                 height_r = height;
  32         }
  33
  34         /* make sure no one is passing us garbage */
  35         g_assert (width_r >= 0 && height_r >= 0);
  36
  37         retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
  38                                  TRUE, 8,
  39                                  width_r + 4,
  40                                  height_r + 4);
  41
  42         /* make it black and fill in the middle */
  43         data = gdk_pixbuf_get_pixels (retval);
  44         rowstride = gdk_pixbuf_get_rowstride (retval);
  45
  46         gdk_pixbuf_fill (retval, 0x000000ff);
  47         for (i = 1; i < height_r + 1; i++)
  48                 memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
  49
  50         /* copy the source pixbuf */
  51         if (source_pixbuf)
  52                 gdk_pixbuf_copy_area (source_pixbuf, 0, 0,
  53                                       width_r,
  54                                       height_r,
  55                                       retval,
  56                                       1, 1);
  57         /* Add the corner */
  58         data [(width_r + 2) * 4 + 3] = 0;
  59         data [(width_r + 3) * 4 + 3] = 0;
  60         data [(width_r + 2) * 4 + (rowstride * 1) + 3] = 0;
  61         data [(width_r + 3) * 4 + (rowstride * 1) + 3] = 0;
  62
  63         data [(height_r + 2) * rowstride + 3] = 0;
  64         data [(height_r + 3) * rowstride + 3] = 0;
  65         data [(height_r + 2) * rowstride + 4 + 3] = 0;
  66         data [(height_r + 3) * rowstride + 4 + 3] = 0;
  67
  68         return retval;
  69 }
  70
  71 void
  72 ev_document_misc_get_page_border_size (gint       page_width,
  73                                        gint       page_height,
  74                                        GtkBorder *border)
  75 {
  76         g_assert (border);
  77
  78         border->left = 1;
  79         border->top = 1;
  80         if (page_width < 100) {
  81                 border->right = 2;
  82                 border->bottom = 2;
  83         } else if (page_width < 500) {
  84                 border->right = 3;
  85                 border->bottom = 3;
  86         } else {
  87                 border->right = 4;
  88                 border->bottom = 4;
  89         }
  90 }
  91
  92
  93 void
  94 ev_document_misc_paint_one_page (GdkDrawable  *drawable,
  95                                  GtkWidget    *widget,
  96                                  GdkRectangle *area,
  97                                  GtkBorder    *border,
  98                                  gboolean highlight)
  99 {
 100         gdk_draw_rectangle (drawable,
 101                             highlight ?
 102                                     widget->style->text_gc[widget->state] : widget->style->dark_gc[widget->state],
 103                             TRUE,
 104                             area->x,
 105                             area->y,
 106                             area->width,
 107                             area->height);
 108         gdk_draw_rectangle (drawable,
 109                             widget->style->white_gc,
 110                             TRUE,
 111                             area->x + border->left,
 112                             area->y + border->top,
 113                             area->width - (border->left + border->right),
 114                             area->height - (border->top + border->bottom));
 115         gdk_draw_rectangle (drawable,
 116                             widget->style->mid_gc[widget->state],
 117                             TRUE,
 118                             area->x,
 119                             area->y + area->height - (border->bottom - border->top),
 120                             border->bottom - border->top,
 121                             border->bottom - border->top);
 122         gdk_draw_rectangle (drawable,
 123                             widget->style->mid_gc[widget->state],
 124                             TRUE,
 125                             area->x + area->width - (border->right - border->left),
 126                             area->y,
 127                             border->right - border->left,
 128                             border->right - border->left);
 129
 130 }