static void
view_actions_set_zoom (GimpActionGroup *group,
GimpDisplayShell *shell)
{
const gchar *action = NULL;
gchar *str;
gchar *label;
guint scale;
g_object_get (shell->zoom,
"percentage", &str,
NULL);
scale = ROUND (gimp_zoom_model_get_factor (shell->zoom) * 1000);
switch (scale)
{
case 16000: action = "view-zoom-16-1"; break;
case 8000: action = "view-zoom-8-1"; break;
case 4000: action = "view-zoom-4-1"; break;
case 2000: action = "view-zoom-2-1"; break;
case 1000: action = "view-zoom-1-1"; break;
case 500: action = "view-zoom-1-2"; break;
case 250: action = "view-zoom-1-4"; break;
case 125: action = "view-zoom-1-8"; break;
case 63:
case 62: action = "view-zoom-1-16"; break;
}
if (! action)
{
action = "view-zoom-other";
label = g_strdup_printf (_("Othe_r (%s)..."), str);
gimp_action_group_set_action_label (group, action, label);
g_free (label);
shell->other_scale = gimp_zoom_model_get_factor (shell->zoom);
}
gimp_action_group_set_action_active (group, action, TRUE);
label = g_strdup_printf (_("_Zoom (%s)"), str);
gimp_action_group_set_action_label (group, "view-zoom-menu", label);
g_free (label);
/* flag as dirty */
shell->other_scale = - fabs (shell->other_scale);
g_free (str);
}
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_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);
}
/**
* gimp_display_shell_scale_get_image_size:
* @shell:
* @w:
* @h:
*
* Gets the size of the rendered image after it has been scaled.
*
**/
void
gimp_display_shell_scale_get_image_size (GimpDisplayShell *shell,
gint *w,
gint *h)
{
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gimp_display_shell_scale_get_image_size_for_scale (shell,
gimp_zoom_model_get_factor (shell->zoom),
w, h);
}
/**
* gimp_zoom_model_zoom:
* @model: a #GimpZoomModel
* @zoom_type: the #GimpZoomType
* @scale: ignored unless @zoom_type == %GIMP_ZOOM_TO
*
* Since GIMP 2.4
**/
void
gimp_zoom_model_zoom (GimpZoomModel *model,
GimpZoomType zoom_type,
gdouble scale)
{
g_return_if_fail (GIMP_IS_ZOOM_MODEL (model));
if (zoom_type != GIMP_ZOOM_TO)
scale = gimp_zoom_model_get_factor (model);
g_object_set (model,
"value", gimp_zoom_model_zoom_step (zoom_type, scale),
NULL);
}
void
view_new_cmd_callback (GtkAction *action,
gpointer data)
{
GimpDisplay *display;
GimpDisplayShell *shell;
return_if_no_display (display, data);
shell = gimp_display_get_shell (display);
gimp_create_display (display->gimp,
gimp_display_get_image (display),
shell->unit, gimp_zoom_model_get_factor (shell->zoom));
}
void
view_new_cmd_callback (GtkAction *action,
gpointer data)
{
GimpDisplay *display;
GimpDisplayShell *shell;
return_if_no_display (display, data);
shell = gimp_display_get_shell (display);
gimp_create_display (display->gimp,
gimp_display_get_image (display),
shell->unit, gimp_zoom_model_get_factor (shell->zoom),
G_OBJECT (gtk_widget_get_screen (GTK_WIDGET (shell))),
gimp_widget_get_monitor (GTK_WIDGET (shell)));
}
void
view_zoom_other_cmd_callback (GtkAction *action,
gpointer data)
{
GimpDisplayShell *shell;
return_if_no_shell (shell, data);
/* check if we are activated by the user or from
* view_actions_set_zoom()
*/
if (gtk_toggle_action_get_active (GTK_TOGGLE_ACTION (action)) &&
shell->other_scale != gimp_zoom_model_get_factor (shell->zoom))
{
gimp_display_shell_scale_dialog (shell);
}
}
/**
* gimp_display_shell_scale_save_revert_values:
* @shell:
*
* Handle the updating of the Revert Zoom variables.
**/
void
gimp_display_shell_scale_save_revert_values (GimpDisplayShell *shell)
{
guint now;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
now = time (NULL);
if (now - shell->last_scale_time >= SCALE_TIMEOUT)
{
shell->last_scale = gimp_zoom_model_get_factor (shell->zoom);
shell->last_offset_x = shell->offset_x;
shell->last_offset_y = shell->offset_y;
}
shell->last_scale_time = now;
}
/**
* gimp_display_shell_scale_fit_or_fill:
* @shell: the #GimpDisplayShell
* @fill: whether to scale the image to fill the viewport,
* or fit inside the viewport
*
* A common implementation for gimp_display_shell_scale_{fit_in,fill}().
**/
static void
gimp_display_shell_scale_fit_or_fill (GimpDisplayShell *shell,
gboolean fill)
{
GimpImage *image;
gdouble image_x;
gdouble image_y;
gdouble image_width;
gdouble image_height;
gdouble current_scale;
gdouble zoom_factor;
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),
&image_x, &image_y,
&image_width, &image_height);
image_width -= image_x;
image_height -= image_y;
current_scale = gimp_zoom_model_get_factor (shell->zoom);
if (fill)
{
zoom_factor = MAX (shell->disp_width / image_width,
shell->disp_height / image_height);
}
else
{
zoom_factor = MIN (shell->disp_width / image_width,
shell->disp_height / image_height);
}
gimp_display_shell_scale (shell,
GIMP_ZOOM_TO,
zoom_factor * current_scale,
GIMP_ZOOM_FOCUS_BEST_GUESS);
gimp_display_shell_scroll_center_image (shell, TRUE, TRUE);
}
void
image_duplicate_cmd_callback (GtkAction *action,
gpointer data)
{
GimpDisplay *display;
GimpDisplayShell *shell;
GimpImage *new_image;
return_if_no_display (display, data);
shell = GIMP_DISPLAY_SHELL (display->shell);
new_image = gimp_image_duplicate (display->image);
gimp_create_display (new_image->gimp,
new_image,
shell->unit,
gimp_zoom_model_get_factor (shell->zoom));
g_object_unref (new_image);
}
void
view_zoom_explicit_cmd_callback (GtkAction *action,
GtkAction *current,
gpointer data)
{
GimpDisplayShell *shell;
gint value;
return_if_no_shell (shell, data);
value = gtk_radio_action_get_current_value (GTK_RADIO_ACTION (action));
if (value != 0 /* not Other... */)
{
if (fabs (value - gimp_zoom_model_get_factor (shell->zoom)) > 0.0001)
gimp_display_shell_scale (shell,
GIMP_ZOOM_TO,
(gdouble) value / 10000,
GIMP_ZOOM_FOCUS_RETAIN_CENTERING_ELSE_BEST_GUESS);
}
}
/* We used to calculate the scale factor in the SCALEFACTOR_X() and
* SCALEFACTOR_Y() macros. But since these are rather frequently
* called and the values rarely change, we now store them in the
* shell and call this function whenever they need to be recalculated.
*/
void
gimp_display_shell_scale_update (GimpDisplayShell *shell)
{
GimpImage *image;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
if (image)
{
gimp_display_shell_calculate_scale_x_and_y (shell,
gimp_zoom_model_get_factor (shell->zoom),
&shell->scale_x,
&shell->scale_y);
}
else
{
shell->scale_x = 1.0;
shell->scale_y = 1.0;
}
}
static void
gimp_navigation_editor_shell_scaled (GimpDisplayShell *shell,
GimpNavigationEditor *editor)
{
if (editor->zoom_label)
{
gchar *str;
g_object_get (shell->zoom,
"percentage", &str,
NULL);
gtk_label_set_text (GTK_LABEL (editor->zoom_label), str);
g_free (str);
}
if (editor->zoom_adjustment)
{
gdouble val;
val = log (gimp_zoom_model_get_factor (shell->zoom)) / G_LN2;
g_signal_handlers_block_by_func (editor->zoom_adjustment,
gimp_navigation_editor_zoom_adj_changed,
editor);
gtk_adjustment_set_value (editor->zoom_adjustment, val);
g_signal_handlers_unblock_by_func (editor->zoom_adjustment,
gimp_navigation_editor_zoom_adj_changed,
editor);
}
gimp_navigation_editor_update_marker (editor);
if (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)))
gimp_ui_manager_update (gimp_editor_get_ui_manager (GIMP_EDITOR (editor)),
gimp_editor_get_popup_data (GIMP_EDITOR (editor)));
}
void
gimp_display_shell_canvas_size_allocate (GtkWidget *widget,
GtkAllocation *allocation,
GimpDisplayShell *shell)
{
/* are we in destruction? */
if (! shell->display || ! gimp_display_get_shell (shell->display))
return;
if ((shell->disp_width != allocation->width) ||
(shell->disp_height != allocation->height))
{
if (shell->zoom_on_resize &&
shell->disp_width > 64 &&
shell->disp_height > 64 &&
allocation->width > 64 &&
allocation->height > 64)
{
gdouble scale = gimp_zoom_model_get_factor (shell->zoom);
gint offset_x;
gint offset_y;
/* FIXME: The code is a bit of a mess */
/* multiply the zoom_factor with the ratio of the new and
* old canvas diagonals
*/
scale *= (sqrt (SQR (allocation->width) +
SQR (allocation->height)) /
sqrt (SQR (shell->disp_width) +
SQR (shell->disp_height)));
offset_x = UNSCALEX (shell, shell->offset_x);
offset_y = UNSCALEX (shell, shell->offset_y);
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, scale);
shell->offset_x = SCALEX (shell, offset_x);
shell->offset_y = SCALEY (shell, offset_y);
}
shell->disp_width = allocation->width;
shell->disp_height = allocation->height;
/* When we size-allocate due to resize of the top level window,
* we want some additional logic. Don't apply it on
* zoom_on_resize though.
*/
if (shell->size_allocate_from_configure_event &&
! shell->zoom_on_resize)
{
gboolean center_horizontally;
gboolean center_vertically;
gint target_offset_x;
gint target_offset_y;
gint sw;
gint sh;
gimp_display_shell_scale_get_image_size (shell, &sw, &sh);
center_horizontally = sw <= shell->disp_width;
center_vertically = sh <= shell->disp_height;
gimp_display_shell_scroll_center_image (shell,
center_horizontally,
center_vertically);
/* This is basically the best we can do before we get an
* API for storing the image offset at the start of an
* image window resize using the mouse
*/
target_offset_x = shell->offset_x;
target_offset_y = shell->offset_y;
if (! center_horizontally)
{
target_offset_x = MAX (shell->offset_x, 0);
}
if (! center_vertically)
{
target_offset_y = MAX (shell->offset_y, 0);
}
gimp_display_shell_scroll_set_offset (shell,
target_offset_x,
target_offset_y);
}
gimp_display_shell_scroll_clamp_and_update (shell);
gimp_display_shell_scaled (shell);
/* Reset */
shell->size_allocate_from_configure_event = FALSE;
}
}
static gint
gimp_display_shell_format_title (GimpDisplayShell *shell,
gchar *title,
gint title_len,
const gchar *format)
{
GimpImage *image;
gint num, denom;
gint i = 0;
g_return_val_if_fail (GIMP_IS_DISPLAY_SHELL (shell), 0);
image = gimp_display_get_image (shell->display);
if (! image)
{
title[0] = '\n';
return 0;
}
gimp_zoom_model_get_fraction (shell->zoom, &num, &denom);
while (i < title_len && *format)
{
switch (*format)
{
case '%':
format++;
switch (*format)
{
case 0:
/* format string ends within %-sequence, print literal '%' */
case '%':
title[i++] = '%';
break;
case 'f': /* base filename */
i += print (title, title_len, i, "%s",
gimp_image_get_display_name (image));
break;
case 'F': /* full filename */
i += print (title, title_len, i, "%s",
gimp_image_get_display_path (image));
break;
case 'p': /* PDB id */
i += print (title, title_len, i, "%d", gimp_image_get_ID (image));
break;
case 'i': /* instance */
i += print (title, title_len, i, "%d",
gimp_display_get_instance (shell->display));
break;
case 't': /* image type */
i += print (title, title_len, i, "%s %s",
gimp_display_shell_title_image_type (image),
gimp_display_shell_title_image_precision (image));
break;
case 'T': /* drawable type */
{
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
const Babl *format = gimp_drawable_get_format (drawable);
if (drawable)
i += print (title, title_len, i, "%s",
gimp_babl_get_description (format));
}
break;
case 's': /* user source zoom factor */
i += print (title, title_len, i, "%d", denom);
break;
case 'd': /* user destination zoom factor */
i += print (title, title_len, i, "%d", num);
break;
case 'z': /* user zoom factor (percentage) */
{
gdouble scale = gimp_zoom_model_get_factor (shell->zoom);
i += print (title, title_len, i,
scale >= 0.15 ? "%.0f" : "%.2f", 100.0 * scale);
}
break;
case 'D': /* dirty flag */
if (format[1] == 0)
{
/* format string ends within %D-sequence, print literal '%D' */
i += print (title, title_len, i, "%%D");
break;
}
if (gimp_image_is_dirty (image))
title[i++] = format[1];
format++;
break;
case 'C': /* clean flag */
if (format[1] == 0)
{
/* format string ends within %C-sequence, print literal '%C' */
i += print (title, title_len, i, "%%C");
break;
}
if (! gimp_image_is_dirty (image))
title[i++] = format[1];
format++;
break;
case 'B': /* dirty flag (long) */
if (gimp_image_is_dirty (image))
i += print (title, title_len, i, "%s", _("(modified)"));
break;
case 'A': /* clean flag (long) */
if (! gimp_image_is_dirty (image))
i += print (title, title_len, i, "%s", _("(clean)"));
break;
case 'm': /* memory used by image */
{
GimpObject *object = GIMP_OBJECT (image);
gchar *str;
str = g_format_size (gimp_object_get_memsize (object, NULL));
i += print (title, title_len, i, "%s", str);
g_free (str);
}
break;
case 'M': /* image size in megapixels */
i += print (title, title_len, i, "%.1f",
(gdouble) gimp_image_get_width (image) *
(gdouble) gimp_image_get_height (image) / 1000000.0);
break;
case 'l': /* number of layers */
i += print (title, title_len, i, "%d",
gimp_image_get_n_layers (image));
break;
case 'L': /* number of layers (long) */
{
gint num = gimp_image_get_n_layers (image);
i += print (title, title_len, i,
ngettext ("%d layer", "%d layers", num), num);
}
break;
case 'n': /* active drawable name */
{
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (drawable)
{
gchar *desc;
desc = gimp_viewable_get_description (GIMP_VIEWABLE (drawable),
NULL);
i += print (title, title_len, i, "%s", desc);
g_free (desc);
}
else
{
i += print (title, title_len, i, "%s", _("(none)"));
}
}
break;
case 'P': /* active drawable PDB id */
{
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (drawable)
i += print (title, title_len, i, "%d",
gimp_item_get_ID (GIMP_ITEM (drawable)));
else
i += print (title, title_len, i, "%s", _("(none)"));
}
break;
case 'W': /* width in real-world units */
if (shell->unit != GIMP_UNIT_PIXEL)
{
gdouble xres;
gdouble yres;
gchar unit_format[8];
gimp_image_get_resolution (image, &xres, &yres);
g_snprintf (unit_format, sizeof (unit_format), "%%.%df",
gimp_unit_get_digits (shell->unit) + 1);
i += print (title, title_len, i, unit_format,
gimp_pixels_to_units (gimp_image_get_width (image),
shell->unit, xres));
break;
}
/* else fallthru */
case 'w': /* width in pixels */
i += print (title, title_len, i, "%d",
gimp_image_get_width (image));
break;
case 'H': /* height in real-world units */
if (shell->unit != GIMP_UNIT_PIXEL)
{
gdouble xres;
gdouble yres;
gchar unit_format[8];
gimp_image_get_resolution (image, &xres, &yres);
g_snprintf (unit_format, sizeof (unit_format), "%%.%df",
gimp_unit_get_digits (shell->unit) + 1);
i += print (title, title_len, i, unit_format,
gimp_pixels_to_units (gimp_image_get_height (image),
shell->unit, yres));
break;
}
/* else fallthru */
case 'h': /* height in pixels */
i += print (title, title_len, i, "%d",
gimp_image_get_height (image));
break;
case 'u': /* unit symbol */
i += print (title, title_len, i, "%s",
gimp_unit_get_symbol (shell->unit));
break;
case 'U': /* unit abbreviation */
i += print (title, title_len, i, "%s",
gimp_unit_get_abbreviation (shell->unit));
break;
/* Other cool things to be added:
* %r = xresolution
* %R = yresolution
* %ø = image's fractal dimension
* %þ = the answer to everything
*/
default:
/* format string contains unknown %-sequence, print it literally */
i += print (title, title_len, i, "%%%c", *format);
break;
}
break;
default:
title[i++] = *format;
break;
}
format++;
}
title[MIN (i, title_len - 1)] = '\0';
return i;
}
/**
* gimp_display_shell_scale:
* @shell: the #GimpDisplayShell
* @zoom_type: whether to zoom in, our or to a specific scale
* @scale: ignored unless @zoom_type == %GIMP_ZOOM_TO
*
* This function figures out the context of the zoom and behaves
* appropriatley thereafter.
*
**/
void
gimp_display_shell_scale (GimpDisplayShell *shell,
GimpZoomType zoom_type,
gdouble new_scale,
GimpZoomFocus zoom_focus)
{
gint x, y;
gdouble current_scale;
gdouble real_new_scale;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (shell->canvas != NULL);
current_scale = gimp_zoom_model_get_factor (shell->zoom);
if (zoom_type != GIMP_ZOOM_TO)
{
real_new_scale = gimp_zoom_model_zoom_step (zoom_type, current_scale);
}
else
{
real_new_scale = new_scale;
}
if (! SCALE_EQUALS (real_new_scale, current_scale))
{
if (shell->display->config->resize_windows_on_zoom)
{
GimpImageWindow *window = gimp_display_shell_get_window (shell);
/* If the window is resized on zoom, simply do the zoom and
* get things rolling
*/
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, real_new_scale);
gimp_display_shell_scaled (shell);
if (window && gimp_image_window_get_active_shell (window) == shell)
{
gimp_image_window_shrink_wrap (window, FALSE);
}
}
else
{
gboolean starts_fitting_horiz;
gboolean starts_fitting_vert;
gboolean zoom_focus_almost_centered_horiz;
gboolean zoom_focus_almost_centered_vert;
gboolean image_center_almost_centered_horiz;
gboolean image_center_almost_centered_vert;
gint image_center_x;
gint image_center_y;
gimp_display_shell_scale_get_zoom_focus (shell,
real_new_scale,
current_scale,
&x,
&y,
zoom_focus);
gimp_display_shell_scale_get_image_center_viewport (shell,
&image_center_x,
&image_center_y);
gimp_display_shell_scale_to (shell, real_new_scale, x, y);
/* If an image axis started to fit due to zooming out or if
* the focus point is as good as in the center, center on
* that axis
*/
gimp_display_shell_scale_image_starts_to_fit (shell,
real_new_scale,
current_scale,
&starts_fitting_horiz,
&starts_fitting_vert);
gimp_display_shell_scale_viewport_coord_almost_centered (shell,
x,
y,
&zoom_focus_almost_centered_horiz,
&zoom_focus_almost_centered_vert);
gimp_display_shell_scale_viewport_coord_almost_centered (shell,
image_center_x,
image_center_y,
&image_center_almost_centered_horiz,
&image_center_almost_centered_vert);
gimp_display_shell_scroll_center_image (shell,
starts_fitting_horiz ||
(zoom_focus_almost_centered_horiz &&
image_center_almost_centered_horiz),
starts_fitting_vert ||
(zoom_focus_almost_centered_vert &&
image_center_almost_centered_vert));
}
}
}
void
view_zoom_cmd_callback (GtkAction *action,
gint value,
gpointer data)
{
GimpDisplayShell *shell;
return_if_no_shell (shell, data);
switch ((GimpActionSelectType) value)
{
case GIMP_ACTION_SELECT_FIRST:
gimp_display_shell_scale (shell,
GIMP_ZOOM_OUT_MAX,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
case GIMP_ACTION_SELECT_LAST:
gimp_display_shell_scale (shell,
GIMP_ZOOM_IN_MAX,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
case GIMP_ACTION_SELECT_PREVIOUS:
gimp_display_shell_scale (shell,
GIMP_ZOOM_OUT,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
case GIMP_ACTION_SELECT_NEXT:
gimp_display_shell_scale (shell,
GIMP_ZOOM_IN,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
case GIMP_ACTION_SELECT_SKIP_PREVIOUS:
gimp_display_shell_scale (shell,
GIMP_ZOOM_OUT_MORE,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
case GIMP_ACTION_SELECT_SKIP_NEXT:
gimp_display_shell_scale (shell,
GIMP_ZOOM_IN_MORE,
0.0,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
default:
{
gdouble scale = gimp_zoom_model_get_factor (shell->zoom);
scale = action_select_value ((GimpActionSelectType) value,
scale,
0.0, 512.0, 1.0,
1.0 / 8.0, 1.0, 16.0, 0.0,
FALSE);
/* min = 1.0 / 256, max = 256.0 */
/* scale = min * (max / min)**(i/n), i = 0..n */
scale = pow (65536.0, scale / 512.0) / 256.0;
gimp_display_shell_scale (shell,
GIMP_ZOOM_TO,
scale,
GIMP_ZOOM_FOCUS_BEST_GUESS);
break;
}
}
}
/**
* gimp_display_shell_scale_dialog:
* @shell: the #GimpDisplayShell
*
* Constructs and displays a dialog allowing the user to enter a
* custom display scale.
**/
void
gimp_display_shell_scale_dialog (GimpDisplayShell *shell)
{
ScaleDialogData *data;
GimpImage *image;
GtkWidget *toplevel;
GtkWidget *hbox;
GtkWidget *grid;
GtkWidget *spin;
GtkWidget *label;
gint num, denom, row;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
if (shell->scale_dialog)
{
gtk_window_present (GTK_WINDOW (shell->scale_dialog));
return;
}
if (SCALE_EQUALS (shell->other_scale, 0.0))
{
/* other_scale not yet initialized */
shell->other_scale = gimp_zoom_model_get_factor (shell->zoom);
}
image = gimp_display_get_image (shell->display);
data = g_slice_new (ScaleDialogData);
data->shell = shell;
data->model = g_object_new (GIMP_TYPE_ZOOM_MODEL,
"value", fabs (shell->other_scale),
NULL);
shell->scale_dialog =
gimp_viewable_dialog_new (GIMP_VIEWABLE (image),
gimp_get_user_context (shell->display->gimp),
_("Zoom Ratio"), "display_scale",
"zoom-original",
_("Select Zoom Ratio"),
GTK_WIDGET (shell),
gimp_standard_help_func,
GIMP_HELP_VIEW_ZOOM_OTHER,
_("_Cancel"), GTK_RESPONSE_CANCEL,
_("_OK"), GTK_RESPONSE_OK,
NULL);
gimp_dialog_set_alternative_button_order (GTK_DIALOG (shell->scale_dialog),
GTK_RESPONSE_OK,
GTK_RESPONSE_CANCEL,
-1);
g_object_weak_ref (G_OBJECT (shell->scale_dialog),
(GWeakNotify) gimp_display_shell_scale_dialog_free, data);
g_object_weak_ref (G_OBJECT (shell->scale_dialog),
(GWeakNotify) g_object_unref, data->model);
g_object_add_weak_pointer (G_OBJECT (shell->scale_dialog),
(gpointer) &shell->scale_dialog);
toplevel = gtk_widget_get_toplevel (GTK_WIDGET (shell));
gtk_window_set_transient_for (GTK_WINDOW (shell->scale_dialog),
GTK_WINDOW (toplevel));
gtk_window_set_destroy_with_parent (GTK_WINDOW (shell->scale_dialog), TRUE);
g_signal_connect (shell->scale_dialog, "response",
G_CALLBACK (gimp_display_shell_scale_dialog_response),
data);
grid = gtk_grid_new ();
gtk_container_set_border_width (GTK_CONTAINER (grid), 12);
gtk_grid_set_column_spacing (GTK_GRID (grid), 6);
gtk_grid_set_row_spacing (GTK_GRID (grid), 6);
gtk_box_pack_start (GTK_BOX (gtk_dialog_get_content_area (GTK_DIALOG (shell->scale_dialog))),
grid, TRUE, TRUE, 0);
gtk_widget_show (grid);
row = 0;
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, row++,
_("Zoom ratio:"), 0.0, 0.5,
hbox, 1);
gimp_zoom_model_get_fraction (data->model, &num, &denom);
data->num_adj = gtk_adjustment_new (num, 1, 256, 1, 8, 0);
spin = gimp_spin_button_new (data->num_adj, 1.0, 0);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);
gtk_entry_set_activates_default (GTK_ENTRY (spin), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spin, TRUE, TRUE, 0);
gtk_widget_show (spin);
label = gtk_label_new (":");
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
data->denom_adj = gtk_adjustment_new (denom, 1, 256, 1, 8, 0);
spin = gimp_spin_button_new (data->denom_adj, 1.0, 0);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);
gtk_entry_set_activates_default (GTK_ENTRY (spin), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spin, TRUE, TRUE, 0);
gtk_widget_show (spin);
hbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 6);
gimp_grid_attach_aligned (GTK_GRID (grid), 0, row++,
_("Zoom:"), 0.0, 0.5,
hbox, 1);
data->scale_adj = gtk_adjustment_new (fabs (shell->other_scale) * 100,
100.0 / 256.0, 25600.0,
10, 50, 0);
spin = gimp_spin_button_new (data->scale_adj, 1.0, 2);
gtk_spin_button_set_numeric (GTK_SPIN_BUTTON (spin), TRUE);
gtk_entry_set_activates_default (GTK_ENTRY (spin), TRUE);
gtk_box_pack_start (GTK_BOX (hbox), spin, TRUE, TRUE, 0);
gtk_widget_show (spin);
label = gtk_label_new ("%");
gtk_box_pack_start (GTK_BOX (hbox), label, FALSE, FALSE, 0);
gtk_widget_show (label);
g_signal_connect (data->scale_adj, "value-changed",
G_CALLBACK (update_zoom_values), data);
g_signal_connect (data->num_adj, "value-changed",
G_CALLBACK (update_zoom_values), data);
g_signal_connect (data->denom_adj, "value-changed",
G_CALLBACK (update_zoom_values), data);
gtk_widget_show (shell->scale_dialog);
}
void
gimp_display_shell_set_initial_scale (GimpDisplayShell *shell,
gdouble scale,
gint *display_width,
gint *display_height)
{
GimpImage *image;
GdkScreen *screen;
gint image_width;
gint image_height;
gint shell_width;
gint shell_height;
gint screen_width;
gint screen_height;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
screen = gtk_widget_get_screen (GTK_WIDGET (shell));
image_width = gimp_image_get_width (image);
image_height = gimp_image_get_height (image);
screen_width = gdk_screen_get_width (screen) * 0.75;
screen_height = gdk_screen_get_height (screen) * 0.75;
/* We need to zoom before we use SCALE[XY] */
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, scale);
shell_width = SCALEX (shell, image_width);
shell_height = SCALEY (shell, image_height);
if (shell->display->config->initial_zoom_to_fit)
{
/* Limit to the size of the screen... */
if (shell_width > screen_width || shell_height > screen_height)
{
gdouble new_scale;
gdouble current = gimp_zoom_model_get_factor (shell->zoom);
new_scale = current * MIN (((gdouble) screen_height) / shell_height,
((gdouble) screen_width) / shell_width);
new_scale = gimp_zoom_model_zoom_step (GIMP_ZOOM_OUT, new_scale);
/* Since zooming out might skip a zoom step we zoom in
* again and test if we are small enough.
*/
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO,
gimp_zoom_model_zoom_step (GIMP_ZOOM_IN,
new_scale));
if (SCALEX (shell, image_width) > screen_width ||
SCALEY (shell, image_height) > screen_height)
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, new_scale);
shell_width = SCALEX (shell, image_width);
shell_height = SCALEY (shell, image_height);
}
}
else
{
/* Set up size like above, but do not zoom to fit. Useful when
* working on large images.
*/
if (shell_width > screen_width)
shell_width = screen_width;
if (shell_height > screen_height)
shell_height = screen_height;
}
if (display_width)
*display_width = shell_width;
if (display_height)
*display_height = shell_height;
}
/**
* gimp_zoom_model_get_fraction
* @model: a #GimpZoomModel
* @numerator: return location for numerator
* @denominator: return location for denominator
*
* Retrieves the current zoom factor of @model as a fraction.
*
* Since GIMP 2.4
**/
void
gimp_zoom_model_get_fraction (GimpZoomModel *model,
gint *numerator,
gint *denominator)
{
gint p0, p1, p2;
gint q0, q1, q2;
gdouble zoom_factor;
gdouble remainder, next_cf;
gboolean swapped = FALSE;
g_return_if_fail (GIMP_IS_ZOOM_MODEL (model));
g_return_if_fail (numerator != NULL && denominator != NULL);
zoom_factor = gimp_zoom_model_get_factor (model);
/* make sure that zooming behaves symmetrically */
if (zoom_factor < 1.0)
{
zoom_factor = 1.0 / zoom_factor;
swapped = TRUE;
}
/* calculate the continued fraction for the desired zoom factor */
p0 = 1;
q0 = 0;
p1 = floor (zoom_factor);
q1 = 1;
remainder = zoom_factor - p1;
while (fabs (remainder) >= 0.0001 &&
fabs (((gdouble) p1 / q1) - zoom_factor) > 0.0001)
{
remainder = 1.0 / remainder;
next_cf = floor (remainder);
p2 = next_cf * p1 + p0;
q2 = next_cf * q1 + q0;
/* Numerator and Denominator are limited by 256 */
/* also absurd ratios like 170:171 are excluded */
if (p2 > 256 || q2 > 256 || (p2 > 1 && q2 > 1 && p2 * q2 > 200))
break;
/* remember the last two fractions */
p0 = p1;
p1 = p2;
q0 = q1;
q1 = q2;
remainder = remainder - next_cf;
}
zoom_factor = (gdouble) p1 / q1;
/* hard upper and lower bounds for zoom ratio */
if (zoom_factor > 256.0)
{
p1 = 256;
q1 = 1;
}
else if (zoom_factor < 1.0 / 256.0)
{
p1 = 1;
q1 = 256;
}
if (swapped)
{
*numerator = q1;
*denominator = p1;
}
else
{
*numerator = p1;
*denominator = q1;
}
}
/**
* gimp_display_shell_scale_to_rectangle:
* @shell: the #GimpDisplayShell
* @zoom_type: whether to zoom in or out
* @x: retangle's x in image coordinates
* @y: retangle's y in image coordinates
* @width: retangle's width in image coordinates
* @height: retangle's height in image coordinates
* @resize_window: whether the display window should be resized
*
* Scales and scrolls to a specific image rectangle
**/
void
gimp_display_shell_scale_to_rectangle (GimpDisplayShell *shell,
GimpZoomType zoom_type,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
gboolean resize_window)
{
GimpImage *image;
gdouble current_scale;
gdouble new_scale;
gdouble display_width;
gdouble display_height;
gdouble factor = 1.0;
gint offset_x = 0;
gint offset_y = 0;
gdouble xres;
gdouble yres;
gdouble screen_xres;
gdouble screen_yres;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
width = MAX (1.0, width);
height = MAX (1.0, height);
current_scale = gimp_zoom_model_get_factor (shell->zoom);
display_width = FUNSCALEX (shell, shell->disp_width);
display_height = FUNSCALEY (shell, shell->disp_height);
switch (zoom_type)
{
case GIMP_ZOOM_IN:
factor = MIN ((display_width / width),
(display_height / height));
break;
case GIMP_ZOOM_OUT:
factor = MAX ((width / display_width),
(height / display_height));
break;
default:
g_return_if_reached ();
break;
}
new_scale = current_scale * factor;
gimp_image_get_resolution (image, &xres, &yres);
gimp_display_shell_scale_get_screen_resolution (shell,
&screen_xres, &screen_yres);
switch (zoom_type)
{
case GIMP_ZOOM_IN:
/* move the center of the rectangle to the center of the
* viewport:
*
* new_offset = center of rectangle in new scale screen coords
* including offset
* -
* center of viewport in screen coords without
* offset
*/
offset_x = RINT (new_scale * (x + width / 2.0) *
screen_xres / xres -
(shell->disp_width / 2.0));
offset_y = RINT (new_scale * (y + height / 2.0) *
screen_yres / yres -
(shell->disp_height / 2.0));
break;
case GIMP_ZOOM_OUT:
/* move the center of the viewport to the center of the
* rectangle:
*
* new_offset = center of viewport in new scale screen coords
* including offset
* -
* center of rectangle in screen coords without
* offset
*/
offset_x = RINT (new_scale * UNSCALEX (shell,
shell->offset_x +
shell->disp_width / 2.0) *
screen_xres / xres -
(SCALEX (shell, x + width / 2.0) -
shell->offset_x));
offset_y = RINT (new_scale * UNSCALEY (shell,
shell->offset_y +
shell->disp_height / 2.0) *
screen_yres / yres -
(SCALEY (shell, y + height / 2.0) -
shell->offset_y));
break;
default:
break;
}
if (new_scale != current_scale ||
offset_x != shell->offset_x ||
offset_y != shell->offset_y)
{
gimp_display_shell_scale_by_values (shell,
new_scale,
offset_x, offset_y,
resize_window);
}
}
/**
* gimp_display_shell_scale:
* @shell: the #GimpDisplayShell
* @zoom_type: whether to zoom in, our or to a specific scale
* @scale: ignored unless @zoom_type == %GIMP_ZOOM_TO
*
* This function figures out the context of the zoom and behaves
* appropriatley thereafter.
*
**/
void
gimp_display_shell_scale (GimpDisplayShell *shell,
GimpZoomType zoom_type,
gdouble new_scale,
GimpZoomFocus zoom_focus)
{
gdouble current_scale;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
g_return_if_fail (shell->canvas != NULL);
current_scale = gimp_zoom_model_get_factor (shell->zoom);
if (zoom_type != GIMP_ZOOM_TO)
new_scale = gimp_zoom_model_zoom_step (zoom_type, current_scale);
if (! SCALE_EQUALS (new_scale, current_scale))
{
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);
if (resize_window)
{
/* If the window is resized on zoom, simply do the zoom and
* get things rolling
*/
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, new_scale);
gimp_display_shell_scale_resize (shell, TRUE, FALSE);
}
else
{
gboolean starts_fitting_horiz;
gboolean starts_fitting_vert;
gboolean zoom_focus_almost_centered_horiz;
gboolean zoom_focus_almost_centered_vert;
gboolean image_center_almost_centered_horiz;
gboolean image_center_almost_centered_vert;
gdouble x, y;
gint image_center_x;
gint image_center_y;
gimp_display_shell_scale_get_zoom_focus (shell,
new_scale,
current_scale,
&x,
&y,
zoom_focus);
gimp_display_shell_scale_get_image_center_viewport (shell,
&image_center_x,
&image_center_y);
gimp_display_shell_scale_to (shell, new_scale, x, y);
/* If an image axis started to fit due to zooming out or if
* the focus point is as good as in the center, center on
* that axis
*/
gimp_display_shell_scale_image_starts_to_fit (shell,
new_scale,
current_scale,
&starts_fitting_horiz,
&starts_fitting_vert);
gimp_display_shell_scale_viewport_coord_almost_centered (shell,
x,
y,
&zoom_focus_almost_centered_horiz,
&zoom_focus_almost_centered_vert);
gimp_display_shell_scale_viewport_coord_almost_centered (shell,
image_center_x,
image_center_y,
&image_center_almost_centered_horiz,
&image_center_almost_centered_vert);
gimp_display_shell_scroll_center_image (shell,
starts_fitting_horiz ||
(zoom_focus_almost_centered_horiz &&
image_center_almost_centered_horiz),
starts_fitting_vert ||
(zoom_focus_almost_centered_vert &&
image_center_almost_centered_vert));
}
}
}
static void
gimp_display_shell_format_title (GimpDisplayShell *shell,
gchar *title,
gint title_len,
const gchar *format)
{
Gimp *gimp;
GimpImage *image;
gint num, denom;
gint i = 0;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = shell->display->image;
gimp = image->gimp;
gimp_zoom_model_get_fraction (shell->zoom, &num, &denom);
while (i < title_len && *format)
{
switch (*format)
{
case '%':
format++;
switch (*format)
{
case 0:
/* format string ends within %-sequence, print literal '%' */
case '%':
title[i++] = '%';
break;
case 'f': /* pruned filename */
{
const gchar *uri = gimp_image_get_uri (image);
gchar *basename;
basename = file_utils_uri_display_basename (uri);
i += print (title, title_len, i, "%s", basename);
g_free (basename);
}
break;
case 'F': /* full filename */
{
gchar *filename;
const gchar *uri = gimp_image_get_uri (image);
filename = file_utils_uri_display_name (uri);
i += print (title, title_len, i, "%s", filename);
g_free (filename);
}
break;
case 'p': /* PDB id */
i += print (title, title_len, i, "%d", gimp_image_get_ID (image));
break;
case 'i': /* instance */
i += print (title, title_len, i, "%d", shell->display->instance);
break;
case 't': /* type */
{
const gchar *image_type_str = NULL;
gboolean empty = gimp_image_is_empty (image);
switch (gimp_image_base_type (image))
{
case GIMP_RGB:
image_type_str = empty ? _("RGB-empty") : _("RGB");
break;
case GIMP_GRAY:
image_type_str = empty ? _("grayscale-empty") : _("grayscale");
break;
case GIMP_INDEXED:
image_type_str = empty ? _("indexed-empty") : _("indexed");
break;
default:
g_assert_not_reached ();
break;
}
i += print (title, title_len, i, "%s", image_type_str);
}
break;
case 's': /* user source zoom factor */
i += print (title, title_len, i, "%d", denom);
break;
case 'd': /* user destination zoom factor */
i += print (title, title_len, i, "%d", num);
break;
case 'z': /* user zoom factor (percentage) */
{
gdouble scale = gimp_zoom_model_get_factor (shell->zoom);
i += print (title, title_len, i,
scale >= 0.15 ? "%.0f" : "%.2f", 100.0 * scale);
}
break;
case 'D': /* dirty flag */
if (format[1] == 0)
{
/* format string ends within %D-sequence, print literal '%D' */
i += print (title, title_len, i, "%%D");
break;
}
if (image->dirty)
title[i++] = format[1];
format++;
break;
case 'C': /* clean flag */
if (format[1] == 0)
{
/* format string ends within %C-sequence, print literal '%C' */
i += print (title, title_len, i, "%%C");
break;
}
if (! image->dirty)
title[i++] = format[1];
format++;
break;
case 'B': /* dirty flag (long) */
if (image->dirty)
i += print (title, title_len, i, "%s", _("(modified)"));
break;
case 'A': /* clean flag (long) */
if (! image->dirty)
i += print (title, title_len, i, "%s", _("(clean)"));
break;
case 'm': /* memory used by image */
{
GimpObject *object = GIMP_OBJECT (image);
gchar *str;
str = gimp_memsize_to_string (gimp_object_get_memsize (object,
NULL));
i += print (title, title_len, i, "%s", str);
g_free (str);
}
break;
case 'l': /* number of layers */
i += print (title, title_len, i, "%d",
gimp_container_num_children (image->layers));
break;
case 'L': /* number of layers (long) */
{
gint num = gimp_container_num_children (image->layers);
i += print (title, title_len, i,
ngettext ("%d layer", "%d layers", num), num);
}
break;
case 'n': /* active drawable name */
{
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (drawable)
i += print (title, title_len, i, "%s",
gimp_object_get_name (GIMP_OBJECT (drawable)));
else
i += print (title, title_len, i, "%s", _("(none)"));
}
break;
case 'P': /* active drawable PDB id */
{
GimpDrawable *drawable = gimp_image_get_active_drawable (image);
if (drawable)
i += print (title, title_len, i, "%d",
gimp_item_get_ID (GIMP_ITEM (drawable)));
else
i += print (title, title_len, i, "%s", _("(none)"));
}
break;
case 'W': /* width in real-world units */
if (shell->unit != GIMP_UNIT_PIXEL)
{
gchar unit_format[8];
g_snprintf (unit_format, sizeof (unit_format), "%%.%df",
_gimp_unit_get_digits (gimp, shell->unit) + 1);
i += print (title, title_len, i, unit_format,
(image->width *
_gimp_unit_get_factor (gimp, shell->unit) /
image->xresolution));
break;
}
/* else fallthru */
case 'w': /* width in pixels */
i += print (title, title_len, i, "%d", image->width);
break;
case 'H': /* height in real-world units */
if (shell->unit != GIMP_UNIT_PIXEL)
{
gchar unit_format[8];
g_snprintf (unit_format, sizeof (unit_format), "%%.%df",
_gimp_unit_get_digits (gimp, shell->unit) + 1);
i += print (title, title_len, i, unit_format,
(image->height *
_gimp_unit_get_factor (gimp, shell->unit) /
image->yresolution));
break;
}
/* else fallthru */
case 'h': /* height in pixels */
i += print (title, title_len, i, "%d", image->height);
break;
case 'u': /* unit symbol */
i += print (title, title_len, i, "%s",
_gimp_unit_get_symbol (gimp, shell->unit));
break;
case 'U': /* unit abbreviation */
i += print (title, title_len, i, "%s",
_gimp_unit_get_abbreviation (gimp, shell->unit));
break;
/* Other cool things to be added:
* %r = xresolution
* %R = yresolution
* %ø = image's fractal dimension
* %þ = the answer to everything
*/
default:
/* format string contains unknown %-sequence, print it literally */
i += print (title, title_len, i, "%%%c", *format);
break;
}
break;
default:
title[i++] = *format;
break;
}
format++;
}
title[MIN (i, title_len - 1)] = '\0';
}
/**
* gimp_display_shell_scale_to_rectangle:
* @shell: the #GimpDisplayShell
* @zoom_type: whether to zoom in or out
* @x: retangle's x in image coordinates
* @y: retangle's y in image coordinates
* @width: retangle's width in image coordinates
* @height: retangle's height in image coordinates
* @resize_window: whether the display window should be resized
*
* Scales and scrolls to a specific image rectangle
**/
void
gimp_display_shell_scale_to_rectangle (GimpDisplayShell *shell,
GimpZoomType zoom_type,
gdouble x,
gdouble y,
gdouble width,
gdouble height,
gboolean resize_window)
{
gdouble current_scale;
gdouble new_scale;
gdouble factor = 1.0;
gint offset_x = 0;
gint offset_y = 0;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
gimp_display_shell_transform_bounds (shell,
x, y,
x + width, y + height,
&x, &y,
&width, &height);
/* Convert scrolled (x1, y1, x2, y2) to unscrolled (x, y, width, height). */
width -= x;
height -= y;
x += shell->offset_x;
y += shell->offset_y;
width = MAX (1.0, width);
height = MAX (1.0, height);
current_scale = gimp_zoom_model_get_factor (shell->zoom);
switch (zoom_type)
{
case GIMP_ZOOM_IN:
factor = MIN ((shell->disp_width / width),
(shell->disp_height / height));
break;
case GIMP_ZOOM_OUT:
factor = MAX ((width / shell->disp_width),
(height / shell->disp_height));
break;
default:
g_return_if_reached ();
break;
}
new_scale = current_scale * factor;
switch (zoom_type)
{
case GIMP_ZOOM_IN:
/* move the center of the rectangle to the center of the
* viewport:
*
* new_offset = center of rectangle in new scale screen coords
* including offset
* -
* center of viewport in screen coords without
* offset
*/
offset_x = RINT (factor * (x + width / 2.0) - (shell->disp_width / 2));
offset_y = RINT (factor * (y + height / 2.0) - (shell->disp_height / 2));
break;
case GIMP_ZOOM_OUT:
/* move the center of the viewport to the center of the
* rectangle:
*
* new_offset = center of viewport in new scale screen coords
* including offset
* -
* center of rectangle in screen coords without
* offset
*/
offset_x = RINT (factor * (shell->offset_x + shell->disp_width / 2) -
((x + width / 2.0) - shell->offset_x));
offset_y = RINT (factor * (shell->offset_y + shell->disp_height / 2) -
((y + height / 2.0) - shell->offset_y));
break;
default:
break;
}
if (new_scale != current_scale ||
offset_x != shell->offset_x ||
offset_y != shell->offset_y)
{
gimp_display_shell_scale_by_values (shell,
new_scale,
offset_x, offset_y,
resize_window);
}
}
void
gimp_display_shell_set_initial_scale (GimpDisplayShell *shell,
gdouble scale,
gint *display_width,
gint *display_height)
{
GimpImage *image;
GdkRectangle workarea;
gint image_width;
gint image_height;
gint monitor_width;
gint monitor_height;
gint shell_width;
gint shell_height;
g_return_if_fail (GIMP_IS_DISPLAY_SHELL (shell));
image = gimp_display_get_image (shell->display);
gdk_monitor_get_workarea (shell->initial_monitor, &workarea);
image_width = gimp_image_get_width (image);
image_height = gimp_image_get_height (image);
monitor_width = workarea.width * 0.75;
monitor_height = workarea.height * 0.75;
/* We need to zoom before we use SCALE[XY] */
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, scale);
shell_width = SCALEX (shell, image_width);
shell_height = SCALEY (shell, image_height);
if (shell->display->config->initial_zoom_to_fit)
{
/* Limit to the size of the monitor... */
if (shell_width > monitor_width || shell_height > monitor_height)
{
gdouble new_scale;
gdouble current = gimp_zoom_model_get_factor (shell->zoom);
new_scale = current * MIN (((gdouble) monitor_height) / shell_height,
((gdouble) monitor_width) / shell_width);
new_scale = gimp_zoom_model_zoom_step (GIMP_ZOOM_OUT, new_scale, 0.0);
/* Since zooming out might skip a zoom step we zoom in
* again and test if we are small enough.
*/
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO,
gimp_zoom_model_zoom_step (GIMP_ZOOM_IN,
new_scale, 0.0));
if (SCALEX (shell, image_width) > monitor_width ||
SCALEY (shell, image_height) > monitor_height)
gimp_zoom_model_zoom (shell->zoom, GIMP_ZOOM_TO, new_scale);
shell_width = SCALEX (shell, image_width);
shell_height = SCALEY (shell, image_height);
}
}
else
{
/* Set up size like above, but do not zoom to fit. Useful when
* working on large images.
*/
shell_width = MIN (shell_width, monitor_width);
shell_height = MIN (shell_height, monitor_height);
}
if (display_width) *display_width = shell_width;
if (display_height) *display_height = shell_height;
}
