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/*
* cursors.c: cursor handling for Evolution.
* copied from Gnumeric.
*
* Authors:
* Miguel de Icaza (miguel@gnu.org)
*/
#include <config.h>
#include <gnome.h>
#include "e-cursors.h"
static GdkColor black, white;
#define GDK_INTERNAL_CURSOR -1
typedef struct {
GdkCursor *cursor;
int hot_x, hot_y;
char **xpm;
} CursorDef;
static CursorDef cursors [] = {
{ NULL, GDK_INTERNAL_CURSOR, GDK_CROSSHAIR, NULL },
{ NULL, GDK_INTERNAL_CURSOR, GDK_LEFT_PTR, NULL },
{ NULL, GDK_INTERNAL_CURSOR, GDK_FLEUR, NULL },
{ NULL, GDK_INTERNAL_CURSOR, GDK_SB_H_DOUBLE_ARROW, NULL },
{ NULL, GDK_INTERNAL_CURSOR, GDK_SB_V_DOUBLE_ARROW, NULL },
{ NULL, 0, 0, NULL }
};
static int inited = FALSE;
static void
create_bitmap_and_mask_from_xpm (GdkBitmap **bitmap, GdkBitmap **mask, gchar **xpm)
{
int height, width, colors;
char pixmap_buffer [(32 * 32)/8];
char mask_buffer [(32 * 32)/8];
int x, y, pix, yofs;
int transparent_color, black_color;
sscanf (xpm [0], "%d %d %d %d", &height, &width, &colors, &pix);
g_assert (height == 32);
g_assert (width == 32);
g_assert (colors <= 3);
transparent_color = ' ';
black_color = '.';
yofs = colors + 1;
for (y = 0; y < 32; y++){
for (x = 0; x < 32;){
char value = 0, maskv = 0;
for (pix = 0; pix < 8; pix++, x++){
if (xpm [y + yofs][x] != transparent_color){
maskv |= 1 << pix;
/*
* Invert the colours here because it seems
* to workaround a bug the Matrox G100 Xserver?
* We reverse the foreground & background in the next
* routine to compensate.
*/
if (xpm [y + yofs][x] == black_color){
value |= 1 << pix;
}
}
}
pixmap_buffer [(y * 4 + x/8)-1] = value;
mask_buffer [(y * 4 + x/8)-1] = maskv;
}
}
*bitmap = gdk_bitmap_create_from_data (NULL, pixmap_buffer, 32, 32);
*mask = gdk_bitmap_create_from_data (NULL, mask_buffer, 32, 32);
}
void
e_cursors_init (void)
{
GdkColormap *colormap;
int i;
colormap = gtk_widget_get_default_colormap ();
gdk_color_white (colormap, &white);
gdk_color_black (colormap, &black);
for (i = 0; cursors [i].hot_x; i++){
GdkBitmap *bitmap, *mask;
if (cursors [i].hot_x < 0)
cursors [i].cursor = gdk_cursor_new (cursors [i].hot_y);
else {
create_bitmap_and_mask_from_xpm (&bitmap, &mask, cursors [i].xpm);
/* The foreground and background colours are reversed.
* See comment above for explanation.
*/
cursors [i].cursor =
gdk_cursor_new_from_pixmap (
bitmap, mask,
&black, &white,
cursors [i].hot_x,
cursors [i].hot_y);
}
}
inited = TRUE;
g_assert (i == E_NUM_CURSORS);
}
void
e_cursors_shutdown (void)
{
int i;
for (i = 0; cursors [i].hot_x; i++)
gdk_cursor_destroy (cursors [i].cursor);
}
/* Returns a cursor given its type */
GdkCursor *
e_cursor_get (ECursorType type)
{
g_return_val_if_fail (type >= 0 && type < E_NUM_CURSORS, NULL);
if (!inited)
g_warning ("e_cursors_init not called");
return cursors [type].cursor;
}
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