diff options
Diffstat (limited to 'e-util')
| -rw-r--r-- | e-util/e-cursors.c | 128 | ||||
| -rw-r--r-- | e-util/e-cursors.h | 33 |
2 files changed, 161 insertions, 0 deletions
diff --git a/e-util/e-cursors.c b/e-util/e-cursors.c new file mode 100644 index 0000000000..acd69a0554 --- /dev/null +++ b/e-util/e-cursors.c @@ -0,0 +1,128 @@ +/* + * 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_ARROW, 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 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); + } + } + + 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); + + return cursors [type].cursor; +} diff --git a/e-util/e-cursors.h b/e-util/e-cursors.h new file mode 100644 index 0000000000..771e5f6d4d --- /dev/null +++ b/e-util/e-cursors.h @@ -0,0 +1,33 @@ +#ifndef E_CURSORS_H +#define E_CURSORS_H + +/* Copied from Gnumeric */ + +typedef enum { + E_CURSOR_THIN_CROSS, + E_CURSOR_ARROW, + E_CURSOR_MOVE, + E_CURSOR_SIZE_X, + E_CURSOR_SIZE_Y, + E_NUM_CURSORS +} ECursorType; + +void e_cursors_init (void); +void e_cursors_shutdown (void); + +#define e_cursor_set(win, c) \ +G_STMT_START { \ + if (win) \ + gdk_window_set_cursor (win, e_cursor_get (c)); \ +} G_STMT_END + +#define e_cursor_set_widget(w, c) \ +G_STMT_START { \ + if (GTK_WIDGET (w)->window) \ + gdk_window_set_cursor (GTK_WIDGET (w)->window, e_cursor_get (c)); \ +} G_STMT_END + +GdkCursor *e_cursor_get (ECursorType type); + +#endif /* E_CURSORS_H */ + |