/**
* gimp_display_shell_rotate_xy:
* @shell:
* @x:
* @y:
* @nx:
* @ny:
*
* Rotates an unrotated display coordinate to a rotated shell coordinate.
**/
void
gimp_display_shell_rotate_xy (const GimpDisplayShell *shell,
gdouble x,
gdouble y,
gint *nx,
gint *ny)
{
gint64 tx;
gint64 ty;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (nx != NULL);
g_return_if_fail (ny != NULL);
if (shell->rotate_transform)
cairo_matrix_transform_point (shell->rotate_transform, &x, &y);
tx = x;
ty = y;
/* The projected coordinates might overflow a gint in the case of
* big images at high zoom levels, so we clamp them here to avoid
* problems.
*/
*nx = CLAMP (tx, G_MININT, G_MAXINT);
*ny = CLAMP (ty, G_MININT, G_MAXINT);
}
/**
* gimp_display_shell_scroll_set_offsets:
* @shell:
* @offset_x:
* @offset_y:
*
* This function scrolls the image in the shell's viewport. It redraws
* the entire canvas.
*
* Use it for setting the scroll offset on freshly scaled images or
* when the window is resized. For panning, use
* gimp_display_shell_scroll().
**/
void
gimp_display_shell_scroll_set_offset (GimpDisplayShell *shell,
gint offset_x,
gint offset_y)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (shell->offset_x == offset_x &&
shell->offset_y == offset_y)
return;
gimp_display_shell_scale_save_revert_values (shell);
/* freeze the active tool */
gimp_display_shell_pause (shell);
shell->offset_x = offset_x;
shell->offset_y = offset_y;
gimp_display_shell_scroll_clamp_and_update (shell);
gimp_display_shell_scrolled (shell);
gimp_display_shell_expose_full (shell);
/* re-enable the active tool */
gimp_display_shell_resume (shell);
}
void
gimp_display_shell_layer_select_init (GimpDisplayShell *shell,
gint move,
guint32 time)
{
LayerSelect *layer_select;
GimpImage *image;
GimpLayer *layer;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
layer = gimp_image_get_active_layer (image);
if (! layer)
return;
layer_select = layer_select_new (image, layer,
image->gimp->config->layer_preview_size);
layer_select_advance (layer_select, move);
gtk_window_set_screen (GTK_WINDOW (layer_select->window),
gtk_widget_get_screen (GTK_WIDGET (shell)));
gtk_widget_show (layer_select->window);
gdk_keyboard_grab (gtk_widget_get_window (layer_select->window), FALSE, time);
}
/**
* gimp_display_shell_scale_image_is_within_viewport:
* @shell:
*
* Returns: %TRUE if the (scaled) image is smaller than and within the
* viewport.
**/
gboolean
gimp_display_shell_scale_image_is_within_viewport (GimpDisplayShell *shell,
gboolean *horizontally,
gboolean *vertically)
{
gint sw, sh;
gboolean horizontally_dummy, vertically_dummy;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), FALSE);
if (! horizontally) horizontally = &horizontally_dummy;
if (! vertically) vertically = &vertically_dummy;
gimp_display_shell_scale_get_image_size (shell, &sw, &sh);
*horizontally = sw <= shell->disp_width &&
shell->offset_x <= 0 &&
shell->offset_x >= sw - shell->disp_width;
*vertically = sh <= shell->disp_height &&
shell->offset_y <= 0 &&
shell->offset_y >= sh - shell->disp_height;
return *vertically && *horizontally;
}
/**
* gimp_display_shell_scale_by_values:
* @shell: the #GimpDisplayShell
* @scale: the new scale
* @offset_x: the new X offset
* @offset_y: the new Y offset
* @resize_window: whether the display window should be resized
*
* Directly sets the image scale and image offsets used by the display. If
* @resize_window is %TRUE then the display window is resized to better
* accommodate the image, see gimp_display_shell_shrink_wrap().
**/
void
gimp_display_shell_scale_by_values (GimpDisplayShell *shell,
gdouble scale,
gint offset_x,
gint offset_y,
gboolean resize_window)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
/* Abort early if the values are all setup already. We don't
* want to inadvertently resize the window (bug #164281).
*/
if (SCALE_EQUALS (gimp_zoom_model_get_factor (shell->zoom), scale) &&
shell->offset_x == offset_x &&
shell->offset_y == offset_y)
return;
gimp_display_shell_scale_save_revert_values (shell);
/* freeze the active tool */
gimp_display_shell_pause (shell);
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, scale);
shell->offset_x = offset_x;
shell->offset_y = offset_y;
gimp_display_shell_scale_resize (shell, resize_window, FALSE);
/* re-enable the active tool */
gimp_display_shell_resume (shell);
}
void
gimp_display_shell_filter_set (GimpDisplayShell *shell,
GimpColorDisplayStack *stack)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (stack == NULL || GIMP_IS_COLOR_DISPLAY_STACK (stack));
if (stack == shell->filter_stack)
return;
if (shell->filter_stack)
{
g_signal_handlers_disconnect_by_func (shell->filter_stack,
gimp_display_shell_filter_changed,
shell);
g_object_unref (shell->filter_stack);
}
shell->filter_stack = stack;
if (shell->filter_stack)
{
g_object_ref (shell->filter_stack);
g_signal_connect (shell->filter_stack, "changed",
G_CALLBACK (gimp_display_shell_filter_changed),
shell);
}
gimp_display_shell_filter_changed (NULL, shell);
}
/**
* gimp_display_shell_scale_can_revert:
* @shell: the #GimpDisplayShell
*
* Return value: %TRUE if a previous display scale exists, otherwise %FALSE.
**/
gboolean
gimp_display_shell_scale_can_revert (GimpDisplayShell *shell)
{
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), FALSE);
return (shell->last_scale > SCALE_EPSILON);
}
/**
* gimp_display_shell_transform_xy:
* @shell:
* @x:
* @y:
* @nx:
* @ny:
*
* Transforms an image coordinate to a shell coordinate.
**/
void
gimp_display_shell_transform_xy (const GimpDisplayShell *shell,
gdouble x,
gdouble y,
gint *nx,
gint *ny)
{
gint64 tx;
gint64 ty;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (nx != NULL);
g_return_if_fail (ny != NULL);
tx = ((gint64) x * shell->x_src_dec) / shell->x_dest_inc;
ty = ((gint64) y * shell->y_src_dec) / shell->y_dest_inc;
tx -= shell->offset_x;
ty -= shell->offset_y;
/* The projected coordinates might overflow a gint in the case of big
images at high zoom levels, so we clamp them here to avoid problems. */
*nx = CLAMP (tx, G_MININT, G_MAXINT);
*ny = CLAMP (ty, G_MININT, G_MAXINT);
}
/**
* gimp_display_shell_untransform_xy:
* @shell: a #GimpDisplayShell
* @x: x coordinate in display coordinates
* @y: y coordinate in display coordinates
* @nx: returns x oordinate in image coordinates
* @ny: returns y coordinate in image coordinates
* @round: if %TRUE, round the results to the nearest integer;
* if %FALSE, simply cast them to @gint.
*
* Transform from display coordinates to image coordinates, so that
* points on the display can be mapped to the corresponding points
* in the image.
**/
void
gimp_display_shell_untransform_xy (const GimpDisplayShell *shell,
gint x,
gint y,
gint *nx,
gint *ny,
gboolean round)
{
gint64 tx;
gint64 ty;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (nx != NULL);
g_return_if_fail (ny != NULL);
tx = (gint64) x + shell->offset_x;
ty = (gint64) y + shell->offset_y;
tx *= shell->x_dest_inc;
ty *= shell->y_dest_inc;
tx += round ? shell->x_dest_inc : shell->x_dest_inc >> 1;
ty += round ? shell->y_dest_inc : shell->y_dest_inc >> 1;
tx /= shell->x_src_dec;
ty /= shell->y_src_dec;
*nx = CLAMP (tx, G_MININT, G_MAXINT);
*ny = CLAMP (ty, G_MININT, G_MAXINT);
}
void
gimp_display_shell_constrain_line (GimpDisplayShell *shell,
gdouble start_x,
gdouble start_y,
gdouble *end_x,
gdouble *end_y,
gint n_snap_lines)
{
gdouble offset_angle;
gdouble xres, yres;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (end_x != NULL);
g_return_if_fail (end_y != NULL);
gimp_display_shell_get_constrained_line_params (shell,
&offset_angle,
&xres, &yres);
gimp_constrain_line (start_x, start_y,
end_x, end_y,
n_snap_lines,
offset_angle,
xres, yres);
}
/**
* gimp_display_shell_scale_to:
* @shell:
* @scale:
* @viewport_x:
* @viewport_y:
*
* Zooms. The display offsets are adjusted so that the point specified
* by @x and @y doesn't change it's position on screen.
**/
static void
gimp_display_shell_scale_to (GimpDisplayShell *shell,
gdouble scale,
gint viewport_x,
gint viewport_y)
{
gdouble scale_x, scale_y;
gdouble image_focus_x, image_focus_y;
gint target_offset_x, target_offset_y;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (! shell->display)
return;
gimp_display_shell_untransform_xy_f (shell,
viewport_x,
viewport_y,
&image_focus_x,
&image_focus_y);
gimp_display_shell_calculate_scale_x_and_y (shell, scale, &scale_x, &scale_y);
target_offset_x = scale_x * image_focus_x - viewport_x;
target_offset_y = scale_y * image_focus_y - viewport_y;
/* Note that we never come here if we need to
* resize_windows_on_zoom
*/
gimp_display_shell_scale_by_values (shell,
scale,
target_offset_x,
target_offset_y,
FALSE);
}
void
gimp_display_shell_get_constrained_line_params (GimpDisplayShell *shell,
gdouble *offset_angle,
gdouble *xres,
gdouble *yres)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (offset_angle != NULL);
g_return_if_fail (xres != NULL);
g_return_if_fail (yres != NULL);
if (shell->flip_horizontally ^ shell->flip_vertically)
*offset_angle = +shell->rotate_angle;
else
*offset_angle = -shell->rotate_angle;
*xres = 1.0;
*yres = 1.0;
if (! shell->dot_for_dot)
{
GimpImage *image = gimp_display_get_image (shell->display);
if (image)
gimp_image_get_resolution (image, xres, yres);
}
}
/**
* gimp_display_shell_untransform_coords:
* @shell: a #GimpDisplayShell
* @display_coords: display coordinates
* @image_coords: returns the corresponding image coordinates
*
* Transforms from display coordinates to image coordinates, so that
* points on the display can be mapped to points in the image.
**/
void
gimp_display_shell_untransform_coords (const GimpDisplayShell *shell,
const GimpCoords *display_coords,
GimpCoords *image_coords)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (display_coords != NULL);
g_return_if_fail (image_coords != NULL);
*image_coords = *display_coords;
if (shell->rotate_untransform)
cairo_matrix_transform_point (shell->rotate_untransform,
&image_coords->x,
&image_coords->y);
image_coords->x += shell->offset_x;
image_coords->y += shell->offset_y;
image_coords->x /= shell->scale_x;
image_coords->y /= shell->scale_y;
image_coords->xscale = shell->scale_x;
image_coords->yscale = shell->scale_y;
}
/**
* gimp_display_shell_unrotate_xy:
* @shell: a #GimpDisplayShell
* @x: x coordinate in rotated display coordinates
* @y: y coordinate in rotated display coordinates
* @nx: returns x oordinate in unrotated display coordinates
* @ny: returns y coordinate in unrotated display coordinates
*
* Rotate from rotated display coordinates to unrotated display
* coordinates.
**/
void
gimp_display_shell_unrotate_xy (const GimpDisplayShell *shell,
gint x,
gint y,
gint *nx,
gint *ny)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (nx != NULL);
g_return_if_fail (ny != NULL);
if (shell->rotate_untransform)
{
gdouble fx = x;
gdouble fy = y;
cairo_matrix_transform_point (shell->rotate_untransform, &fy, &fy);
*nx = CLAMP (fx, G_MININT, G_MAXINT);
*ny = CLAMP (fy, G_MININT, G_MAXINT);
}
else
{
*nx = x;
*ny = y;
}
}
void
gimp_display_shell_scale_drag (GimpDisplayShell *shell,
gdouble start_x,
gdouble start_y,
gdouble delta_x,
gdouble delta_y)
{
gdouble scale;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
scale = gimp_zoom_model_get_factor (shell->zoom);
gimp_display_shell_push_zoom_focus_pointer_pos (shell, start_x, start_y);
if (delta_y > 0)
{
gimp_display_shell_scale (shell,
GIMP_ZOOM_TO,
scale * 1.1,
GIMP_ZOOM_FOCUS_POINTER);
}
else if (delta_y < 0)
{
gimp_display_shell_scale (shell,
GIMP_ZOOM_TO,
scale * 0.9,
GIMP_ZOOM_FOCUS_POINTER);
}
}
/**
* gimp_display_shell_transform_segments:
* @shell: a #GimpDisplayShell
* @src_segs: array of segments in image coordinates
* @dest_segs: returns the corresponding segments in display coordinates
* @n_segs: number of segments
*
* Transforms from image coordinates to display coordinates, so that
* objects can be rendered at the correct points on the display.
**/
void
gimp_display_shell_transform_segments (const GimpDisplayShell *shell,
const GimpBoundSeg *src_segs,
GimpSegment *dest_segs,
gint n_segs,
gdouble offset_x,
gdouble offset_y)
{
gint i;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
for (i = 0; i < n_segs ; i++)
{
gdouble x1, x2;
gdouble y1, y2;
x1 = src_segs[i].x1 + offset_x;
x2 = src_segs[i].x2 + offset_x;
y1 = src_segs[i].y1 + offset_y;
y2 = src_segs[i].y2 + offset_y;
dest_segs[i].x1 = SCALEX (shell, x1) - shell->offset_x;
dest_segs[i].x2 = SCALEX (shell, x2) - shell->offset_x;
dest_segs[i].y1 = SCALEY (shell, y1) - shell->offset_y;
dest_segs[i].y2 = SCALEY (shell, y2) - shell->offset_y;
}
}
/**
* gimp_display_shell_get_rotated_scale:
* @shell: the #GimpDisplayShell
* @scale_x: horizontal scale output
* @scale_y: vertical scale output
*
* Returns the screen space horizontal and vertical scaling
* factors, taking rotation into account.
**/
void
gimp_display_shell_get_rotated_scale (GimpDisplayShell *shell,
gdouble *scale_x,
gdouble *scale_y)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (shell->rotate_angle == 0.0 || shell->scale_x == shell->scale_y)
{
if (scale_x) *scale_x = shell->scale_x;
if (scale_y) *scale_y = shell->scale_y;
}
else
{
gdouble a = G_PI * shell->rotate_angle / 180.0;
gdouble cos_a = cos (a);
gdouble sin_a = sin (a);
if (scale_x) *scale_x = 1.0 / sqrt (SQR (cos_a / shell->scale_x) +
SQR (sin_a / shell->scale_y));
if (scale_y) *scale_y = 1.0 / sqrt (SQR (cos_a / shell->scale_y) +
SQR (sin_a / shell->scale_x));
}
}
/**
* gimp_display_shell_scroll_center_image:
* @shell:
* @horizontally:
* @vertically:
*
* Centers the image in the display shell on the desired axes.
*
**/
void
gimp_display_shell_scroll_center_image (GimpDisplayShell *shell,
gboolean horizontally,
gboolean vertically)
{
gint sw, sh;
gint target_offset_x, target_offset_y;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (! shell->display ||
! gimp_display_get_image (shell->display) ||
(! vertically && ! horizontally))
return;
target_offset_x = shell->offset_x;
target_offset_y = shell->offset_y;
gimp_display_shell_scale_get_image_size (shell, &sw, &sh);
if (horizontally)
{
target_offset_x = (sw - shell->disp_width) / 2;
}
if (vertically)
{
target_offset_y = (sh - shell->disp_height) / 2;
}
gimp_display_shell_scroll_set_offset (shell,
target_offset_x,
target_offset_y);
}
GimpColorDisplayStack *
gimp_display_shell_filter_new (GimpDisplayShell *shell,
GimpColorConfig *config)
{
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), NULL);
g_return_val_if_fail (GIMP_IS_COLOR_CONFIG (config), NULL);
if (config->display_module)
{
GType type = g_type_from_name (config->display_module);
if (g_type_is_a (type, GIMP_TYPE_COLOR_DISPLAY))
{
GimpColorDisplay *display;
GimpColorDisplayStack *stack;
display = g_object_new (type,
"color-config", config,
"color-managed", shell,
NULL);
stack = gimp_color_display_stack_new ();
gimp_color_display_stack_add (stack, display);
g_object_unref (display);
return stack;
}
}
return NULL;
}
/**
* gimp_display_shell_scroll_setup_vscrollbar:
* @shell:
* @value:
*
* Setup the limits of the vertical scrollbar
*
**/
void
gimp_display_shell_scroll_setup_vscrollbar (GimpDisplayShell *shell,
gdouble value)
{
gint sh;
gdouble lower;
gdouble upper;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (! shell->display ||
! gimp_display_get_image (shell->display))
return;
gimp_display_shell_scale_get_image_size (shell, NULL, &sh);
if (shell->disp_height < sh)
{
lower = MIN (value, 0);
upper = MAX (value + shell->disp_height, sh);
}
else
{
lower = MIN (value, -(shell->disp_height - sh) / 2);
upper = MAX (value + shell->disp_height,
sh + (shell->disp_height - sh) / 2);
}
g_object_set (shell->vsbdata,
"lower", lower,
"upper", upper,
"step-increment", (gdouble) MAX (shell->scale_y,
MINIMUM_STEP_AMOUNT),
NULL);
}
/**
* gimp_display_shell_scale_set_dot_for_dot:
* @shell: the #GimpDisplayShell
* @dot_for_dot: whether "Dot for Dot" should be enabled
*
* If @dot_for_dot is set to %TRUE then the "Dot for Dot" mode (where image and
* screen pixels are of the same size) is activated. Dually, the mode is
* disabled if @dot_for_dot is %FALSE.
**/
void
gimp_display_shell_scale_set_dot_for_dot (GimpDisplayShell *shell,
gboolean dot_for_dot)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (dot_for_dot != shell->dot_for_dot)
{
GimpDisplayConfig *config = shell->display->config;
gboolean resize_window;
/* Resize windows only in multi-window mode */
resize_window = (config->resize_windows_on_zoom &&
! GIMP_GUI_CONFIG (config)->single_window_mode);
/* freeze the active tool */
gimp_display_shell_pause (shell);
shell->dot_for_dot = dot_for_dot;
gimp_display_shell_scale_update (shell);
gimp_display_shell_scale_resize (shell, resize_window, FALSE);
/* re-enable the active tool */
gimp_display_shell_resume (shell);
}
}
void
gimp_display_shell_expose_region (GimpDisplayShell *shell,
cairo_region_t *region)
{
GdkRegion *gdk_region;
gint n_rectangles;
gint i;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (region != NULL);
if (! gtk_widget_get_realized (shell->canvas))
return;
gdk_region = gdk_region_new ();
n_rectangles = cairo_region_num_rectangles (region);
for (i = 0; i < n_rectangles; i++)
{
cairo_rectangle_int_t rectangle;
cairo_region_get_rectangle (region, i, &rectangle);
gdk_region_union_with_rect (gdk_region, (GdkRectangle *) &rectangle);
}
gdk_window_invalidate_region (gtk_widget_get_window (shell->canvas),
gdk_region, TRUE);
gdk_region_destroy (gdk_region);
}
/**
* gimp_display_shell_scale_fill:
* @shell: the #GimpDisplayShell
*
* Sets the scale such that the entire display area is precisely
* filled by the image.
**/
void
gimp_display_shell_scale_fill (GimpDisplayShell *shell)
{
GimpImage *image;
gint image_width;
gint image_height;
gdouble xres;
gdouble yres;
gdouble zoom_factor;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
image_width = gimp_image_get_width (image);
image_height = gimp_image_get_height (image);
gimp_image_get_resolution (image, &xres, &yres);
if (! shell->dot_for_dot)
{
image_width = ROUND (image_width * shell->monitor_xres / xres);
image_height = ROUND (image_height * shell->monitor_yres / yres);
}
zoom_factor = MAX ((gdouble) shell->disp_width / (gdouble) image_width,
(gdouble) shell->disp_height / (gdouble) image_height);
gimp_display_shell_scale (shell,
GIMP_ZOOM_TO,
zoom_factor,
GIMP_ZOOM_FOCUS_BEST_GUESS);
gimp_display_shell_scroll_center_image (shell, TRUE, TRUE);
}
void
gimp_display_shell_expose_full (GimpDisplayShell *shell)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gtk_widget_queue_draw (shell->canvas);
}
/**
* gimp_display_shell_scale_resize:
* @shell: the #GimpDisplayShell
* @resize_window: whether the display window should be resized
* @grow_only: whether shrinking of the window is allowed or not
*
* Function commonly called after a change in display scale to make the changes
* visible to the user. If @resize_window is %TRUE then the display window is
* resized to accommodate the display image as per
* gimp_display_shell_shrink_wrap().
**/
void
gimp_display_shell_scale_resize (GimpDisplayShell *shell,
gboolean resize_window,
gboolean grow_only)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
/* freeze the active tool */
gimp_display_shell_pause (shell);
if (resize_window)
{
GimpImageWindow *window = gimp_display_shell_get_window (shell);
if (window && gimp_image_window_get_active_shell (window) == shell)
{
gimp_image_window_shrink_wrap (window, grow_only);
}
}
gimp_display_shell_scroll_clamp_and_update (shell);
gimp_display_shell_scaled (shell);
gimp_display_shell_expose_full (shell);
/* re-enable the active tool */
gimp_display_shell_resume (shell);
}
void
gimp_display_shell_clear_software_cursor (GimpDisplayShell *shell)
{
GimpStatusbar *statusbar;
GimpSessionInfo *session_info;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gimp_canvas_item_set_visible (shell->cursor, FALSE);
statusbar = gimp_display_shell_get_statusbar (shell);
gimp_statusbar_clear_cursor (statusbar);
session_info = gimp_dialog_factory_find_session_info (gimp_dialog_factory_get_singleton (),
"gimp-cursor-view");
if (session_info && gimp_session_info_get_widget (session_info))
{
GtkWidget *cursor_view;
cursor_view = gtk_bin_get_child (GTK_BIN (gimp_session_info_get_widget (session_info)));
if (cursor_view)
gimp_cursor_view_clear_cursor (GIMP_CURSOR_VIEW (cursor_view));
}
}
void
gimp_display_shell_selection_free (GimpDisplayShell *shell)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (shell->selection)
{
Selection *selection = shell->selection;
selection_stop (selection);
g_signal_handlers_disconnect_by_func (shell,
selection_window_state_event,
selection);
g_signal_handlers_disconnect_by_func (shell,
selection_visibility_notify_event,
selection);
selection_free_segs (selection);
g_slice_free (Selection, selection);
shell->selection = NULL;
}
}
/**
* gimp_display_shell_scale_get_image_bounds:
* @shell:
* @x:
* @y:
* @w:
* @h:
*
* Gets the screen-space boudning box of the image, after it has
* been transformed (i.e., scaled, rotated, and scrolled).
**/
void
gimp_display_shell_scale_get_image_bounds (GimpDisplayShell *shell,
gint *x,
gint *y,
gint *w,
gint *h)
{
GimpImage *image;
gdouble x1, y1;
gdouble x2, y2;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
gimp_display_shell_transform_bounds (shell,
0, 0,
gimp_image_get_width (image),
gimp_image_get_height (image),
&x1, &y1,
&x2, &y2);
x1 = ceil (x1);
y1 = ceil (y1);
x2 = floor (x2);
y2 = floor (y2);
if (x) *x = x1 + shell->offset_x;
if (y) *y = y1 + shell->offset_y;
if (w) *w = x2 - x1;
if (h) *h = y2 - y1;
}
void
gimp_display_shell_close (GimpDisplayShell *shell,
gboolean kill_it)
{
GimpImage *image;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = shell->display->image;
/* FIXME: gimp_busy HACK not really appropriate here because we only
* want to prevent the busy image and display to be closed. --Mitch
*/
if (image->gimp->busy)
return;
/* If the image has been modified, give the user a chance to save
* it before nuking it--this only applies if its the last view
* to an image canvas. (a image with disp_count = 1)
*/
if (! kill_it &&
image->disp_count == 1 &&
image->dirty &&
GIMP_DISPLAY_CONFIG (image->gimp->config)->confirm_on_close)
{
gimp_display_shell_close_dialog (shell, image);
}
else
{
gimp_display_delete (shell->display);
}
}
/**
* gimp_display_shell_unzoom_xy:
* @shell: a #GimpDisplayShell
* @x: x coordinate in display coordinates
* @y: y coordinate in display coordinates
* @nx: returns x oordinate in image coordinates
* @ny: returns y coordinate in image coordinates
* @round: if %TRUE, round the results to the nearest integer;
* if %FALSE, simply cast them to @gint.
*
* Zoom from display coordinates to image coordinates, so that
* points on the display can be mapped to the corresponding points
* in the image.
**/
void
gimp_display_shell_unzoom_xy (const GimpDisplayShell *shell,
gint x,
gint y,
gint *nx,
gint *ny,
gboolean round)
{
gint64 tx;
gint64 ty;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (nx != NULL);
g_return_if_fail (ny != NULL);
if (round)
{
tx = SIGNED_ROUND (((gdouble) x + shell->offset_x) / shell->scale_x);
ty = SIGNED_ROUND (((gdouble) y + shell->offset_y) / shell->scale_y);
}
else
{
tx = ((gint64) x + shell->offset_x) / shell->scale_x;
ty = ((gint64) y + shell->offset_y) / shell->scale_y;
}
*nx = CLAMP (tx, G_MININT, G_MAXINT);
*ny = CLAMP (ty, G_MININT, G_MAXINT);
}
