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Diffstat (limited to 'app/display/gimpdisplayshell-callbacks.c')
| -rw-r--r-- | app/display/gimpdisplayshell-callbacks.c | 647 |
1 files changed, 647 insertions, 0 deletions
diff --git a/app/display/gimpdisplayshell-callbacks.c b/app/display/gimpdisplayshell-callbacks.c new file mode 100644 index 0000000..9b65529 --- /dev/null +++ b/app/display/gimpdisplayshell-callbacks.c @@ -0,0 +1,647 @@ +/* GIMP - The GNU Image Manipulation Program + * Copyright (C) 1995 Spencer Kimball and Peter Mattis + * + * This program is free software: you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program. If not, see <https://www.gnu.org/licenses/>. + */ + +#include "config.h" + +#include <gegl.h> +#include <gtk/gtk.h> + +#include "libgimpmath/gimpmath.h" +#include "libgimpwidgets/gimpwidgets.h" + +#include "display-types.h" + +#include "core/gimp.h" +#include "core/gimpimage.h" +#include "core/gimpimage-quick-mask.h" + +#include "widgets/gimpcairo-wilber.h" +#include "widgets/gimpuimanager.h" + +#include "gimpcanvasitem.h" +#include "gimpdisplay.h" +#include "gimpdisplayshell.h" +#include "gimpdisplayshell-appearance.h" +#include "gimpdisplayshell-callbacks.h" +#include "gimpdisplayshell-draw.h" +#include "gimpdisplayshell-scale.h" +#include "gimpdisplayshell-scroll.h" +#include "gimpdisplayshell-scrollbars.h" +#include "gimpdisplayshell-selection.h" +#include "gimpdisplayshell-title.h" +#include "gimpdisplayshell-transform.h" +#include "gimpdisplayxfer.h" +#include "gimpimagewindow.h" +#include "gimpnavigationeditor.h" + +#include "git-version.h" + +#include "gimp-intl.h" + + +/* local function prototypes */ + +static void gimp_display_shell_vadjustment_changed (GtkAdjustment *adjustment, + GimpDisplayShell *shell); +static void gimp_display_shell_hadjustment_changed (GtkAdjustment *adjustment, + GimpDisplayShell *shell); +static gboolean gimp_display_shell_vscrollbar_change_value (GtkRange *range, + GtkScrollType scroll, + gdouble value, + GimpDisplayShell *shell); + +static gboolean gimp_display_shell_hscrollbar_change_value (GtkRange *range, + GtkScrollType scroll, + gdouble value, + GimpDisplayShell *shell); + +static void gimp_display_shell_canvas_draw_image (GimpDisplayShell *shell, + cairo_t *cr); +static void gimp_display_shell_canvas_draw_drop_zone (GimpDisplayShell *shell, + cairo_t *cr); + + +/* public functions */ + +void +gimp_display_shell_canvas_realize (GtkWidget *canvas, + GimpDisplayShell *shell) +{ + GimpCanvasPaddingMode padding_mode; + GimpRGB padding_color; + GtkAllocation allocation; + + gtk_widget_grab_focus (canvas); + + gimp_display_shell_get_padding (shell, &padding_mode, &padding_color); + gimp_display_shell_set_padding (shell, padding_mode, &padding_color); + + gtk_widget_get_allocation (canvas, &allocation); + + gimp_display_shell_title_update (shell); + + shell->disp_width = allocation.width; + shell->disp_height = allocation.height; + + /* set up the scrollbar observers */ + g_signal_connect (shell->hsbdata, "value-changed", + G_CALLBACK (gimp_display_shell_hadjustment_changed), + shell); + g_signal_connect (shell->vsbdata, "value-changed", + G_CALLBACK (gimp_display_shell_vadjustment_changed), + shell); + + g_signal_connect (shell->hsb, "change-value", + G_CALLBACK (gimp_display_shell_hscrollbar_change_value), + shell); + + g_signal_connect (shell->vsb, "change-value", + G_CALLBACK (gimp_display_shell_vscrollbar_change_value), + shell); + + /* allow shrinking */ + gtk_widget_set_size_request (GTK_WIDGET (shell), 0, 0); + + shell->xfer = gimp_display_xfer_realize (GTK_WIDGET(shell)); + + /* HACK: remove with GTK+ 3.x: this unconditionally maps the + * rulers, if configured to be hidden they are never visible to the + * user because they will be hidden again right away. + * + * For some obscure reason, having the rulers mapped once prevents + * crashes with tablets and on-canvas dialogs. See bug #784480 and + * all its duplicates. + */ + gtk_widget_show (shell->hrule); + gtk_widget_show (shell->vrule); +} + +void +gimp_display_shell_canvas_realize_after (GtkWidget *canvas, + GimpDisplayShell *shell) +{ + GimpImageWindow *window = gimp_display_shell_get_window (shell); + + /* HACK: see above: must go with GTK+ 3.x too. Restore the rulers' + * intended visibility again. + */ + gimp_image_window_suspend_keep_pos (window); + gimp_display_shell_appearance_update (shell); + gimp_image_window_resume_keep_pos (window); +} + +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; + + if (! gimp_display_shell_get_infinite_canvas (shell)) + { + gimp_display_shell_scroll_center_image (shell, + center_horizontally, + center_vertically); + } + else + { + gimp_display_shell_scroll_center_content (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); + + shell->size_allocate_from_configure_event = FALSE; + } + + if (shell->size_allocate_center_image) + { + gimp_display_shell_scroll_center_image (shell, TRUE, TRUE); + + shell->size_allocate_center_image = FALSE; + } +} + +gboolean +gimp_display_shell_canvas_expose (GtkWidget *widget, + GdkEventExpose *eevent, + GimpDisplayShell *shell) +{ + /* are we in destruction? */ + if (! shell->display || ! gimp_display_get_shell (shell->display)) + return TRUE; + + /* we will scroll around in the next tick anyway, so we just can as + * well skip the drawing of this frame and wait for the next + */ + if (shell->size_allocate_center_image) + return TRUE; + + /* ignore events on overlays */ + if (eevent->window == gtk_widget_get_window (widget)) + { + cairo_t *cr; + + cr = gdk_cairo_create (gtk_widget_get_window (shell->canvas)); + gdk_cairo_region (cr, eevent->region); + cairo_clip (cr); + + if (gimp_display_get_image (shell->display)) + { + gimp_display_shell_canvas_draw_image (shell, cr); + } + else + { + gimp_display_shell_canvas_draw_drop_zone (shell, cr); + } + + cairo_destroy (cr); + } + + return FALSE; +} + +gboolean +gimp_display_shell_origin_button_press (GtkWidget *widget, + GdkEventButton *event, + GimpDisplayShell *shell) +{ + if (! shell->display->gimp->busy) + { + if (event->type == GDK_BUTTON_PRESS && event->button == 1) + { + gboolean unused; + + g_signal_emit_by_name (shell, "popup-menu", &unused); + } + } + + /* Return TRUE to stop signal emission so the button doesn't grab the + * pointer away from us. + */ + return TRUE; +} + +gboolean +gimp_display_shell_quick_mask_button_press (GtkWidget *widget, + GdkEventButton *bevent, + GimpDisplayShell *shell) +{ + if (! gimp_display_get_image (shell->display)) + return TRUE; + + if (gdk_event_triggers_context_menu ((GdkEvent *) bevent)) + { + GimpImageWindow *window = gimp_display_shell_get_window (shell); + + if (window) + { + GimpUIManager *manager = gimp_image_window_get_ui_manager (window); + + gimp_ui_manager_ui_popup (manager, + "/quick-mask-popup", + GTK_WIDGET (shell), + NULL, NULL, NULL, NULL); + } + + return TRUE; + } + + return FALSE; +} + +void +gimp_display_shell_quick_mask_toggled (GtkWidget *widget, + GimpDisplayShell *shell) +{ + GimpImage *image = gimp_display_get_image (shell->display); + gboolean active = gtk_toggle_button_get_active (GTK_TOGGLE_BUTTON (widget)); + + if (active != gimp_image_get_quick_mask_state (image)) + { + GimpImageWindow *window = gimp_display_shell_get_window (shell); + + if (window) + { + GimpUIManager *manager = gimp_image_window_get_ui_manager (window); + + gimp_ui_manager_toggle_action (manager, + "quick-mask", "quick-mask-toggle", + active); + } + } +} + +gboolean +gimp_display_shell_navigation_button_press (GtkWidget *widget, + GdkEventButton *bevent, + GimpDisplayShell *shell) +{ + if (! gimp_display_get_image (shell->display)) + return TRUE; + + if (bevent->type == GDK_BUTTON_PRESS && bevent->button == 1) + { + gimp_navigation_editor_popup (shell, widget, bevent->x, bevent->y); + } + + return TRUE; +} + + +/* private functions */ + +static void +gimp_display_shell_vadjustment_changed (GtkAdjustment *adjustment, + GimpDisplayShell *shell) +{ + /* If we are panning with mouse, scrollbars are to be ignored or + * they will cause jitter in motion + */ + if (! shell->scrolling) + gimp_display_shell_scroll (shell, + 0, + gtk_adjustment_get_value (adjustment) - + shell->offset_y); +} + +static void +gimp_display_shell_hadjustment_changed (GtkAdjustment *adjustment, + GimpDisplayShell *shell) +{ + /* If we are panning with mouse, scrollbars are to be ignored or + * they will cause jitter in motion + */ + if (! shell->scrolling) + gimp_display_shell_scroll (shell, + gtk_adjustment_get_value (adjustment) - + shell->offset_x, + 0); +} + +static gboolean +gimp_display_shell_hscrollbar_change_value (GtkRange *range, + GtkScrollType scroll, + gdouble value, + GimpDisplayShell *shell) +{ + if (! shell->display) + return TRUE; + + if ((scroll == GTK_SCROLL_JUMP) || + (scroll == GTK_SCROLL_PAGE_BACKWARD) || + (scroll == GTK_SCROLL_PAGE_FORWARD)) + return FALSE; + + g_object_freeze_notify (G_OBJECT (shell->hsbdata)); + + gimp_display_shell_scrollbars_setup_horizontal (shell, value); + + g_object_thaw_notify (G_OBJECT (shell->hsbdata)); /* emits "changed" */ + + return FALSE; +} + +static gboolean +gimp_display_shell_vscrollbar_change_value (GtkRange *range, + GtkScrollType scroll, + gdouble value, + GimpDisplayShell *shell) +{ + if (! shell->display) + return TRUE; + + if ((scroll == GTK_SCROLL_JUMP) || + (scroll == GTK_SCROLL_PAGE_BACKWARD) || + (scroll == GTK_SCROLL_PAGE_FORWARD)) + return FALSE; + + g_object_freeze_notify (G_OBJECT (shell->vsbdata)); + + gimp_display_shell_scrollbars_setup_vertical (shell, value); + + g_object_thaw_notify (G_OBJECT (shell->vsbdata)); /* emits "changed" */ + + return FALSE; +} + +static void +gimp_display_shell_canvas_draw_image (GimpDisplayShell *shell, + cairo_t *cr) +{ + cairo_rectangle_list_t *clip_rectangles; + GeglRectangle image_rect; + GeglRectangle rotated_image_rect; + GeglRectangle canvas_rect; + cairo_matrix_t matrix; + gdouble x1, y1; + gdouble x2, y2; + + gimp_display_shell_scale_get_image_unrotated_bounding_box ( + shell, + &image_rect.x, + &image_rect.y, + &image_rect.width, + &image_rect.height); + + gimp_display_shell_scale_get_image_unrotated_bounds ( + shell, + &canvas_rect.x, + &canvas_rect.y, + &canvas_rect.width, + &canvas_rect.height); + + /* the background has already been cleared by GdkWindow + */ + + + /* on top, draw the exposed part of the region that is inside the + * image + */ + + cairo_save (cr); + clip_rectangles = cairo_copy_clip_rectangle_list (cr); + cairo_get_matrix (cr, &matrix); + + if (shell->rotate_transform) + cairo_transform (cr, shell->rotate_transform); + + if (shell->show_all) + { + cairo_save (cr); + + if (gimp_display_shell_get_padding_in_show_all (shell)) + { + cairo_rectangle (cr, + canvas_rect.x, + canvas_rect.y, + canvas_rect.width, + canvas_rect.height); + cairo_clip (cr); + } + + gimp_display_shell_draw_checkerboard (shell, cr); + + cairo_restore (cr); + } + + cairo_rectangle (cr, + image_rect.x, + image_rect.y, + image_rect.width, + image_rect.height); + cairo_clip (cr); + + gimp_display_shell_rotate_bounds (shell, + image_rect.x, + image_rect.y, + image_rect.x + image_rect.width, + image_rect.y + image_rect.height, + &x1, &y1, &x2, &y2); + + rotated_image_rect.x = floor (x1); + rotated_image_rect.y = floor (y1); + rotated_image_rect.width = ceil (x2) - rotated_image_rect.x; + rotated_image_rect.height = ceil (y2) - rotated_image_rect.y; + + if (gdk_cairo_get_clip_rectangle (cr, NULL)) + { + gint i; + + if (! shell->show_all) + { + cairo_save (cr); + gimp_display_shell_draw_checkerboard (shell, cr); + cairo_restore (cr); + } + + if (shell->show_image) + { + cairo_set_matrix (cr, &matrix); + + for (i = 0; i < clip_rectangles->num_rectangles; i++) + { + cairo_rectangle_t clip_rect = clip_rectangles->rectangles[i]; + GeglRectangle rect; + + rect.x = floor (clip_rect.x); + rect.y = floor (clip_rect.y); + rect.width = ceil (clip_rect.x + clip_rect.width) - rect.x; + rect.height = ceil (clip_rect.y + clip_rect.height) - rect.y; + + if (gegl_rectangle_intersect (&rect, &rect, &rotated_image_rect)) + { + gimp_display_shell_draw_image (shell, cr, + rect.x, rect.y, + rect.width, rect.height); + } + } + } + } + + cairo_rectangle_list_destroy (clip_rectangles); + cairo_restore (cr); + + + /* finally, draw all the remaining image window stuff on top + */ + + /* draw canvas items */ + cairo_save (cr); + + if (shell->rotate_transform) + cairo_transform (cr, shell->rotate_transform); + + gimp_canvas_item_draw (shell->canvas_item, cr); + + cairo_restore (cr); + + gimp_canvas_item_draw (shell->unrotated_item, cr); + + /* restart (and recalculate) the selection boundaries */ + gimp_display_shell_selection_restart (shell); +} + +static void +gimp_display_shell_canvas_draw_drop_zone (GimpDisplayShell *shell, + cairo_t *cr) +{ + cairo_save (cr); + + gimp_cairo_draw_drop_wilber (shell->canvas, cr, shell->blink); + + cairo_restore (cr); + +#ifdef GIMP_UNSTABLE + { + PangoLayout *layout; + gchar *msg; + GtkAllocation allocation; + gint width; + gint height; + gdouble scale; + + layout = gtk_widget_create_pango_layout (shell->canvas, NULL); + + msg = g_strdup_printf (_("<big>Unstable Development Version</big>\n\n" + "<small>commit <tt>%s</tt></small>\n\n" + "<small>Please test bugs against " + "latest git master branch\n" + "before reporting them.</small>"), + GIMP_GIT_VERSION_ABBREV); + pango_layout_set_markup (layout, msg, -1); + g_free (msg); + pango_layout_set_alignment (layout, PANGO_ALIGN_CENTER); + + pango_layout_get_pixel_size (layout, &width, &height); + gtk_widget_get_allocation (shell->canvas, &allocation); + + scale = MIN (((gdouble) allocation.width / 2.0) / (gdouble) width, + ((gdouble) allocation.height / 2.0) / (gdouble) height); + + cairo_move_to (cr, + (allocation.width - (width * scale)) / 2, + (allocation.height - (height * scale)) / 2); + + cairo_scale (cr, scale, scale); + + pango_cairo_show_layout (cr, layout); + + g_object_unref (layout); + } +#endif /* GIMP_UNSTABLE */ +} |