| Top |  |  |  |  | 
| GtkWidget * | gimp_preview_area_new () | 
| void | gimp_preview_area_draw () | 
| void | gimp_preview_area_fill () | 
| void | gimp_preview_area_blend () | 
| void | gimp_preview_area_mask () | 
| void | gimp_preview_area_set_offsets () | 
| void | gimp_preview_area_set_colormap () | 
| void | gimp_preview_area_set_max_size () | 
| void | gimp_preview_area_menu_popup () | 
| void | gimp_preview_area_set_color_config () | 
GObject ╰── GInitiallyUnowned ╰── GtkObject ╰── GtkWidget ╰── GtkDrawingArea ╰── GimpPreviewArea
GtkWidget *
gimp_preview_area_new (void);
Creates a new GimpPreviewArea widget.
void gimp_preview_area_draw (GimpPreviewArea *area,gint x,gint y,gint width,gint height,GimpImageType type,const guchar *buf,gint rowstride);
Draws buf
 on area
 and queues a redraw on the given rectangle.
Since GIMP 2.2
| area | a GimpPreviewArea widget. | |
| x | x offset in preview | |
| y | y offset in preview | |
| width | buffer width | |
| height | buffer height | |
| type | the GimpImageType of  | |
| buf | a guchar buffer that contains the preview pixel data. | |
| rowstride | rowstride of  | 
void gimp_preview_area_fill (GimpPreviewArea *area,gint x,gint y,gint width,gint height,guchar red,guchar green,guchar blue);
Fills the given rectangle of area
 in the given color and queues a
redraw.
Since GIMP 2.2
| area | a GimpPreviewArea widget. | |
| x | x offset in preview | |
| y | y offset in preview | |
| width | width of the rectangle to fill | |
| height | height of the rectangle to fill | |
| red | red component of the fill color (0-255) | |
| green | green component of the fill color (0-255) | |
| blue | red component of the fill color (0-255) | 
void gimp_preview_area_blend (GimpPreviewArea *area,gint x,gint y,gint width,gint height,GimpImageType type,const guchar *buf1,gint rowstride1,const guchar *buf2,gint rowstride2,guchar opacity);
Composites buf1
 on buf2
 with the given opacity
, draws the result
to area
 and queues a redraw on the given rectangle.
Since GIMP 2.2
| area | a GimpPreviewArea widget. | |
| x | x offset in preview | |
| y | y offset in preview | |
| width | buffer width | |
| height | buffer height | |
| type | the GimpImageType of  | |
| buf1 | a guchar buffer that contains the pixel data for the lower layer | |
| rowstride1 | rowstride of  | |
| buf2 | a guchar buffer that contains the pixel data for the upper layer | |
| rowstride2 | rowstride of  | |
| opacity | The opacity of the first layer. | 
void gimp_preview_area_mask (GimpPreviewArea *area,gint x,gint y,gint width,gint height,GimpImageType type,const guchar *buf1,gint rowstride1,const guchar *buf2,gint rowstride2,const guchar *mask,gint rowstride_mask);
Composites buf1
 on buf2
 with the given mask
, draws the result on
area
 and queues a redraw on the given rectangle.
Since GIMP 2.2
| area | a GimpPreviewArea widget. | |
| x | x offset in preview | |
| y | y offset in preview | |
| width | buffer width | |
| height | buffer height | |
| type | the GimpImageType of  | |
| buf1 | a guchar buffer that contains the pixel data for the lower layer | |
| rowstride1 | rowstride of  | |
| buf2 | a guchar buffer that contains the pixel data for the upper layer | |
| rowstride2 | rowstride of  | |
| mask | a guchar buffer representing the mask of the second layer. | |
| rowstride_mask | rowstride for the mask. | 
void gimp_preview_area_set_offsets (GimpPreviewArea *area,gint x,gint y);
Sets the offsets of the previewed area. This information is used when drawing the checkerboard and to determine the dither offsets.
Since: 2.2
void gimp_preview_area_set_colormap (GimpPreviewArea *area,const guchar *colormap,gint num_colors);
Sets the colormap for the GimpPreviewArea widget. You need to
call this function before you use gimp_preview_area_draw() with
an image type of GIMP_INDEXED_IMAGE or GIMP_INDEXEDA_IMAGE.
Since GIMP 2.2
| area | ||
| colormap | a guchar buffer that contains the colormap | |
| num_colors | the number of colors in the colormap | 
void gimp_preview_area_set_max_size (GimpPreviewArea *area,gint width,gint height);
Usually a GimpPreviewArea fills the size that it is allocated. This function allows you to limit the preview area to a maximum size. If a larger size is allocated for the widget, the preview will draw itself centered into the allocated area.
| area | a GimpPreviewArea widget | |
| width | the maximum width in pixels or -1 to unset the limit | |
| height | the maximum height in pixels or -1 to unset the limit | 
Since: 2.2
void gimp_preview_area_menu_popup (GimpPreviewArea *area,GdkEventButton *event);
Creates a popup menu that allows one to configure the size and type of
the checkerboard pattern that the area
 uses to visualize transparency.
Since: 2.2
void gimp_preview_area_set_color_config (GimpPreviewArea *area,GimpColorConfig *config);
Sets the color management configuration to use with this preview area.
Since: 2.10
“check-size” property“check-size” GimpCheckSize
The size of the checkerboard pattern indicating transparency.
Flags: Read / Write
Default value: GIMP_CHECK_SIZE_MEDIUM_CHECKS
“check-type” property“check-type” GimpCheckType
The colors of the checkerboard pattern indicating transparency.
Flags: Read / Write
Default value: GIMP_CHECK_TYPE_GRAY_CHECKS