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                                       int        rotation,
  16                                       GdkPixbuf *source_pixbuf)
  17 {
  18         GdkPixbuf *retval;
  19         guchar *data;
  20         gint rowstride;
  21         int i;
  22         int width_r, height_r;
  23
  24         rotation = rotation % 360;
  25
  26
  27         if (source_pixbuf)
  28                 g_return_val_if_fail (GDK_IS_PIXBUF (source_pixbuf), NULL);
  29
  30         if (source_pixbuf) {
  31                 width_r = gdk_pixbuf_get_width (source_pixbuf);
  32                 height_r = gdk_pixbuf_get_height (source_pixbuf);
  33         } else {
  34                 if (rotation == 0 || rotation == 180) {
  35                         width_r = width;
  36                         height_r = height;
  37                 } else if (rotation == 90 || rotation == 270) {
  38                         width_r = height;
  39                         height_r = width;
  40                 } else {
  41                         g_assert_not_reached ();
  42                 }
  43         }
  44
  45         /* make sure no one is passing us garbage */
  46         g_assert (width_r >= 0 && height_r >= 0);
  47
  48         retval = gdk_pixbuf_new (GDK_COLORSPACE_RGB,
  49                                  TRUE, 8,
  50                                  width_r + 4,
  51                                  height_r + 4);
  52
  53         /* make it black and fill in the middle */
  54         data = gdk_pixbuf_get_pixels (retval);
  55         rowstride = gdk_pixbuf_get_rowstride (retval);
  56
  57         gdk_pixbuf_fill (retval, 0x000000ff);
  58         for (i = 1; i < height_r + 1; i++)
  59                 memset (data + (rowstride * i) + 4, 0xffffffff, width_r * 4);
  60
  61         /* copy the source pixbuf */
  62         if (source_pixbuf)
  63                 gdk_pixbuf_copy_area (source_pixbuf, 0, 0,
  64                                       width_r,
  65                                       height_r,
  66                                       retval,
  67                                       1, 1);
  68         /* Add the corner */
  69         data [(width_r + 2) * 4 + 3] = 0;
  70         data [(width_r + 3) * 4 + 3] = 0;
  71         data [(width_r + 2) * 4 + (rowstride * 1) + 3] = 0;
  72         data [(width_r + 3) * 4 + (rowstride * 1) + 3] = 0;
  73
  74         data [(height_r + 2) * rowstride + 3] = 0;
  75         data [(height_r + 3) * rowstride + 3] = 0;
  76         data [(height_r + 2) * rowstride + 4 + 3] = 0;
  77         data [(height_r + 3) * rowstride + 4 + 3] = 0;
  78
  79         return retval;
  80 }
  81
  82 void
  83 ev_document_misc_get_page_border_size (gint       page_width,
  84                                        gint       page_height,
  85                                        GtkBorder *border)
  86 {
  87         g_assert (border);
  88
  89         border->left = 1;
  90         border->top = 1;
  91         if (page_width < 100) {
  92                 border->right = 2;
  93                 border->bottom = 2;
  94         } else if (page_width < 500) {
  95                 border->right = 3;
  96                 border->bottom = 3;
  97         } else {
  98                 border->right = 4;
  99                 border->bottom = 4;
 100         }
 101 }
 102
 103
 104 void
 105 ev_document_misc_paint_one_page (GdkDrawable  *drawable,
 106                                  GtkWidget    *widget,
 107                                  GdkRectangle *area,
 108                                  GtkBorder    *border,
 109                                  gboolean highlight)
 110 {
 111         gdk_draw_rectangle (drawable,
 112                             highlight ?
 113                                     widget->style->text_gc[widget->state] : widget->style->dark_gc[widget->state],
 114                             TRUE,
 115                             area->x,
 116                             area->y,
 117                             area->width,
 118                             area->height);
 119         gdk_draw_rectangle (drawable,
 120                             widget->style->white_gc,
 121                             TRUE,
 122                             area->x + border->left,
 123                             area->y + border->top,
 124                             area->width - (border->left + border->right),
 125                             area->height - (border->top + border->bottom));
 126         gdk_draw_rectangle (drawable,
 127                             widget->style->mid_gc[widget->state],
 128                             TRUE,
 129                             area->x,
 130                             area->y + area->height - (border->bottom - border->top),
 131                             border->bottom - border->top,
 132                             border->bottom - border->top);
 133         gdk_draw_rectangle (drawable,
 134                             widget->style->mid_gc[widget->state],
 135                             TRUE,
 136                             area->x + area->width - (border->right - border->left),
 137                             area->y,
 138                             border->right - border->left,
 139                             border->right - border->left);
 140
 141 }