diff options
Diffstat (limited to 'widgets/misc/e-map.c')
| -rw-r--r-- | widgets/misc/e-map.c | 1803 |
1 files changed, 0 insertions, 1803 deletions
diff --git a/widgets/misc/e-map.c b/widgets/misc/e-map.c deleted file mode 100644 index de9d96d009..0000000000 --- a/widgets/misc/e-map.c +++ /dev/null @@ -1,1803 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* Map widget. - * - * Copyright (C) 2000-2001 Ximian, Inc. - * - * Authors: Hans Petter Jansson <hpj@ximian.com> - * - * This program is free software; you can redistribute it and/or - * modify it under the terms of version 2 of the GNU General Public - * License as published by the Free Software Foundation. - * - * 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, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#include <config.h> -#include <math.h> -#include <stdlib.h> -#include <gdk/gdkkeysyms.h> -#include <gtk/gtksignal.h> -#include <gdk-pixbuf/gdk-pixbuf.h> -#include <libart_lgpl/art_filterlevel.h> - -#include "e-map.h" - -/* Scroll step increment */ - -#define SCROLL_STEP_SIZE 32 - - -/* */ - -#define E_MAP_GET_WIDTH(map) gdk_pixbuf_get_width(((EMapPrivate *) E_MAP(map)->priv)->map_render_pixbuf) -#define E_MAP_GET_HEIGHT(map) gdk_pixbuf_get_height(((EMapPrivate *) E_MAP(map)->priv)->map_render_pixbuf) - - -/* Zoom state - keeps track of animation hacks */ - -typedef enum -{ - E_MAP_ZOOMED_IN, - E_MAP_ZOOMED_OUT, - E_MAP_ZOOMING_IN, - E_MAP_ZOOMING_OUT -} -EMapZoomState; - - -/* Private part of the EMap structure */ - -typedef struct -{ - /* Pointer to map image */ - GdkPixbuf *map_pixbuf, *map_render_pixbuf; - - /* Settings */ - gboolean frozen, smooth_zoom; - - /* Adjustments for scrolling */ - GtkAdjustment *hadj; - GtkAdjustment *vadj; - - /* Current scrolling offsets */ - int xofs, yofs; - - /* Realtime zoom data */ - EMapZoomState zoom_state; - double zoom_target_long, zoom_target_lat; - - /* Dots */ - GPtrArray *points; -} -EMapPrivate; - - -/* Signal IDs */ - -enum -{ - LAST_SIGNAL -}; - -static guint e_map_signals[LAST_SIGNAL]; - - -/* Internal prototypes */ - -static void e_map_class_init (EMapClass *class); -static void e_map_init (EMap *view); -static void e_map_destroy (GtkObject *object); -static void e_map_finalize (GtkObject *object); -static void e_map_unmap (GtkWidget *widget); -static void e_map_realize (GtkWidget *widget); -static void e_map_unrealize (GtkWidget *widget); -static void e_map_size_request (GtkWidget *widget, GtkRequisition *requisition); -static void e_map_size_allocate (GtkWidget *widget, GtkAllocation *allocation); -static void e_map_draw (GtkWidget *widget, GdkRectangle *area); -static gint e_map_button_press (GtkWidget *widget, GdkEventButton *event); -static gint e_map_button_release (GtkWidget *widget, GdkEventButton *event); -static gint e_map_motion (GtkWidget *widget, GdkEventMotion *event); -static gint e_map_expose (GtkWidget *widget, GdkEventExpose *event); -static gint e_map_key_press (GtkWidget *widget, GdkEventKey *event); -static void e_map_set_scroll_adjustments (GtkWidget *widget, GtkAdjustment *hadj, GtkAdjustment *vadj); - -static void update_render_pixbuf (EMap *map, ArtFilterLevel interp, gboolean render_overlays); -static void set_scroll_area (EMap *view); -static void request_paint_area (EMap *view, GdkRectangle *area); -static void center_at (EMap *map, int x, int y, gboolean scroll); -static void smooth_center_at (EMap *map, int x, int y); -static void scroll_to (EMap *view, int x, int y); -static void zoom_do (EMap *map); -static gint load_map_background (EMap *view, gchar *name); -static void adjustment_changed_cb (GtkAdjustment *adj, gpointer data); -static void update_and_paint (EMap *map); -static void update_render_point (EMap *map, EMapPoint *point); -static void repaint_point (EMap *map, EMapPoint *point); - -static GtkWidgetClass *parent_class; - - -/* ----------------- * - * Widget management * - * ----------------- */ - - -/** - * e_map_get_type: - * @void: - * - * Registers the #EMap class if necessary, and returns the type ID - * associated to it. - * - * Return value: The type ID of the #EMap class. - **/ - -GtkType -e_map_get_type (void) -{ - static GtkType e_map_type = 0; - - if (!e_map_type) - { - static const GtkTypeInfo e_map_info = - { - "EMap", - sizeof (EMap), - sizeof (EMapClass), - (GtkClassInitFunc) e_map_class_init, - (GtkObjectInitFunc) e_map_init, - NULL, /* reserved_1 */ - NULL, /* reserved_2 */ - (GtkClassInitFunc) NULL - }; - - e_map_type = gtk_type_unique (GTK_TYPE_WIDGET, &e_map_info); - } - - return e_map_type; -} - -/* Class initialization function for the map view */ - -static void -e_map_class_init (EMapClass *class) -{ - GtkObjectClass *object_class; - GtkWidgetClass *widget_class; - - object_class = (GtkObjectClass *) class; - widget_class = (GtkWidgetClass *) class; - - parent_class = gtk_type_class (GTK_TYPE_WIDGET); - - object_class->destroy = e_map_destroy; - object_class->finalize = e_map_finalize; - - class->set_scroll_adjustments = e_map_set_scroll_adjustments; - widget_class->set_scroll_adjustments_signal = gtk_signal_new ("set_scroll_adjustments", GTK_RUN_LAST, object_class->type, GTK_SIGNAL_OFFSET (EMapClass, set_scroll_adjustments), gtk_marshal_NONE__POINTER_POINTER, GTK_TYPE_NONE, 2, GTK_TYPE_ADJUSTMENT, GTK_TYPE_ADJUSTMENT); - - gtk_object_class_add_signals (object_class, e_map_signals, LAST_SIGNAL); - - widget_class->unmap = e_map_unmap; - widget_class->realize = e_map_realize; - widget_class->unrealize = e_map_unrealize; - widget_class->size_request = e_map_size_request; - widget_class->size_allocate = e_map_size_allocate; - widget_class->draw = e_map_draw; - widget_class->button_press_event = e_map_button_press; - widget_class->button_release_event = e_map_button_release; - widget_class->motion_notify_event = e_map_motion; - widget_class->expose_event = e_map_expose; - widget_class->key_press_event = e_map_key_press; -} - - -/* Object initialization function for the map view */ - -static void -e_map_init (EMap *view) -{ - EMapPrivate *priv; - - priv = g_new0 (EMapPrivate, 1); - view->priv = priv; - - load_map_background (view, MAP_DIR"/world_map-960.png"); - priv->frozen = FALSE; - priv->smooth_zoom = TRUE; - priv->zoom_state = E_MAP_ZOOMED_OUT; - priv->points = g_ptr_array_new (); - - GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS); - GTK_WIDGET_UNSET_FLAGS (view, GTK_NO_WINDOW); -} - - -/* Destroy handler for the map view */ - -static void -e_map_destroy (GtkObject *object) -{ - EMap *view; - EMapPrivate *priv; - - g_return_if_fail (object != NULL); - g_return_if_fail (IS_E_MAP (object)); - - view = E_MAP (object); - priv = view->priv; - - gtk_signal_disconnect_by_data (GTK_OBJECT (priv->hadj), view); - gtk_signal_disconnect_by_data (GTK_OBJECT (priv->vadj), view); - - if (GTK_OBJECT_CLASS (parent_class)->destroy) - (*GTK_OBJECT_CLASS (parent_class)->destroy) (object); -} - - -/* Finalize handler for the map view */ - -static void -e_map_finalize (GtkObject *object) -{ - EMap *view; - EMapPrivate *priv; - - g_return_if_fail (object != NULL); - g_return_if_fail (IS_E_MAP (object)); - - view = E_MAP (object); - priv = view->priv; - - gtk_object_unref (GTK_OBJECT (priv->hadj)); - priv->hadj = NULL; - - gtk_object_unref (GTK_OBJECT (priv->vadj)); - priv->vadj = NULL; - - if (priv->map_pixbuf) - { - gdk_pixbuf_unref (priv->map_pixbuf); - priv->map_pixbuf = NULL; - } - - if (priv->map_render_pixbuf) - { - gdk_pixbuf_unref (priv->map_render_pixbuf); - priv->map_render_pixbuf = NULL; - } - - g_free (priv); - view->priv = NULL; - - if (GTK_OBJECT_CLASS (parent_class)->finalize) - (*GTK_OBJECT_CLASS (parent_class)->finalize) (object); -} - - -/* Unmap handler for the map view */ - -static void -e_map_unmap (GtkWidget *widget) -{ - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - - if (GTK_WIDGET_CLASS (parent_class)->unmap) - (*GTK_WIDGET_CLASS (parent_class)->unmap) (widget); -} - - -/* Realize handler for the map view */ - -static void -e_map_realize (GtkWidget *widget) -{ - GdkWindowAttr attr; - int attr_mask; - - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - - GTK_WIDGET_SET_FLAGS (widget, GTK_REALIZED); - - attr.window_type = GDK_WINDOW_CHILD; - attr.x = widget->allocation.x; - attr.y = widget->allocation.y; - attr.width = widget->allocation.width; - attr.height = widget->allocation.height; - attr.wclass = GDK_INPUT_OUTPUT; - attr.visual = gdk_rgb_get_visual (); - attr.colormap = gdk_rgb_get_cmap (); - attr.event_mask = gtk_widget_get_events (widget) | - GDK_EXPOSURE_MASK | GDK_BUTTON_PRESS_MASK | GDK_KEY_PRESS_MASK | - GDK_POINTER_MOTION_MASK; - - attr_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_VISUAL | GDK_WA_COLORMAP; - - widget->window = gdk_window_new (gtk_widget_get_parent_window (widget), &attr, attr_mask); - gdk_window_set_user_data (widget->window, widget); - - widget->style = gtk_style_attach (widget->style, widget->window); - - gdk_window_set_back_pixmap (widget->window, NULL, FALSE); - update_render_pixbuf (E_MAP (widget), GDK_INTERP_BILINEAR, TRUE); -} - - -/* Unrealize handler for the map view */ - -static void -e_map_unrealize (GtkWidget *widget) -{ - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - - if (GTK_WIDGET_CLASS (parent_class)->unrealize) - (*GTK_WIDGET_CLASS (parent_class)->unrealize) (widget); -} - - -/* Size_request handler for the map view */ - -static void -e_map_size_request (GtkWidget *widget, GtkRequisition *requisition) -{ - EMap *view; - EMapPrivate *priv; - - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - g_return_if_fail (requisition != NULL); - - view = E_MAP (widget); - priv = view->priv; - - /* TODO: Put real sizes here. */ - - requisition->width = gdk_pixbuf_get_width (priv->map_pixbuf); - requisition->height = gdk_pixbuf_get_height (priv->map_pixbuf); -} - - -/* Size_allocate handler for the map view */ - -static void -e_map_size_allocate (GtkWidget *widget, GtkAllocation *allocation) -{ - EMap *view; - EMapPrivate *priv; - int xofs, yofs; - GdkRectangle area; - - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - g_return_if_fail (allocation != NULL); - - view = E_MAP (widget); - priv = view->priv; - - xofs = priv->xofs; - yofs = priv->yofs; - - /* Resize the window */ - - widget->allocation = *allocation; - - if (GTK_WIDGET_REALIZED (widget)) - { - gdk_window_move_resize (widget->window, allocation->x, allocation->y, allocation->width, allocation->height); - - area.x = 0; - area.y = 0; - area.width = allocation->width; - area.height = allocation->height; - request_paint_area (E_MAP (widget), &area); - } - - update_render_pixbuf (view, GDK_INTERP_BILINEAR, TRUE); -} - - -/* Draw handler for the map view */ - -static void -e_map_draw (GtkWidget *widget, GdkRectangle *area) -{ - EMap *view; - - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - g_return_if_fail (area != NULL); - - view = E_MAP (widget); - - request_paint_area (view, area); -} - - -/* Button press handler for the map view */ - -static gint -e_map_button_press (GtkWidget *widget, GdkEventButton *event) -{ - EMap *view; - EMapPrivate *priv; - - view = E_MAP (widget); - priv = view->priv; - - if (!GTK_WIDGET_HAS_FOCUS (widget)) gtk_widget_grab_focus (widget); - return TRUE; -} - - -/* Button release handler for the map view */ - -static gint -e_map_button_release (GtkWidget *widget, GdkEventButton *event) -{ - EMap *view; - EMapPrivate *priv; - - view = E_MAP (widget); - priv = view->priv; - - if (event->button != 1) return FALSE; - - gdk_pointer_ungrab (event->time); - return TRUE; -} - - -/* Motion handler for the map view */ - -static gint -e_map_motion (GtkWidget *widget, GdkEventMotion *event) -{ - EMap *view; - EMapPrivate *priv; - - view = E_MAP (widget); - priv = view->priv; - - return FALSE; - -/* - * if (event->is_hint) - * gdk_window_get_pointer(widget->window, &x, &y, &mods); - * else - * { - * x = event->x; - * y = event->y; - * } - * - * return TRUE; - */ -} - - -/* Expose handler for the map view */ - -static gint -e_map_expose (GtkWidget *widget, GdkEventExpose *event) -{ - EMap *view; - - g_return_val_if_fail (widget != NULL, FALSE); - g_return_val_if_fail (IS_E_MAP (widget), FALSE); - g_return_val_if_fail (event != NULL, FALSE); - - view = E_MAP (widget); - - request_paint_area (view, &event->area); - return TRUE; -} - - -/* Set_scroll_adjustments handler for the map view */ - -static void -e_map_set_scroll_adjustments (GtkWidget *widget, GtkAdjustment *hadj, GtkAdjustment *vadj) -{ - EMap *view; - EMapPrivate *priv; - gboolean need_adjust; - - g_return_if_fail (widget != NULL); - g_return_if_fail (IS_E_MAP (widget)); - - view = E_MAP (widget); - priv = view->priv; - - if (hadj) g_return_if_fail (GTK_IS_ADJUSTMENT (hadj)); - else hadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0)); - - if (vadj) g_return_if_fail (GTK_IS_ADJUSTMENT (vadj)); - else vadj = GTK_ADJUSTMENT (gtk_adjustment_new (0.0, 0.0, 0.0, 0.0, 0.0, 0.0)); - - if (priv->hadj && priv->hadj != hadj) - { - gtk_signal_disconnect_by_data (GTK_OBJECT (priv->hadj), view); - gtk_object_unref (GTK_OBJECT (priv->hadj)); - } - - if (priv->vadj && priv->vadj != vadj) - { - gtk_signal_disconnect_by_data (GTK_OBJECT (priv->vadj), view); - gtk_object_unref (GTK_OBJECT (priv->vadj)); - } - - need_adjust = FALSE; - - if (priv->hadj != hadj) - { - priv->hadj = hadj; - gtk_object_ref (GTK_OBJECT (priv->hadj)); - gtk_object_sink (GTK_OBJECT (priv->hadj)); - - gtk_signal_connect (GTK_OBJECT (priv->hadj), "value_changed", GTK_SIGNAL_FUNC (adjustment_changed_cb), view); - - need_adjust = TRUE; - } - - if (priv->vadj != vadj) - { - priv->vadj = vadj; - gtk_object_ref (GTK_OBJECT (priv->vadj)); - gtk_object_sink (GTK_OBJECT (priv->vadj)); - - gtk_signal_connect (GTK_OBJECT (priv->vadj), "value_changed", GTK_SIGNAL_FUNC (adjustment_changed_cb), view); - - need_adjust = TRUE; - } - - if (need_adjust) adjustment_changed_cb (NULL, view); -} - - -/* Key press handler for the map view */ - -static gint -e_map_key_press (GtkWidget *widget, GdkEventKey *event) -{ - EMap *view; - EMapPrivate *priv; - gboolean do_scroll; - int xofs, yofs; - - view = E_MAP (widget); - priv = view->priv; - - do_scroll = FALSE; - xofs = yofs = 0; - - switch (event->keyval) - { - case GDK_Up: - do_scroll = TRUE; - xofs = 0; - yofs = -SCROLL_STEP_SIZE; - break; - - case GDK_Down: - do_scroll = TRUE; - xofs = 0; - yofs = SCROLL_STEP_SIZE; - break; - - case GDK_Left: - do_scroll = TRUE; - xofs = -SCROLL_STEP_SIZE; - yofs = 0; - break; - - case GDK_Right: - do_scroll = TRUE; - xofs = SCROLL_STEP_SIZE; - yofs = 0; - break; - - default: - return FALSE; - } - - if (do_scroll) - { - int x, y; - - x = CLAMP (priv->xofs + xofs, 0, priv->hadj->upper - priv->hadj->page_size); - y = CLAMP (priv->yofs + yofs, 0, priv->vadj->upper - priv->vadj->page_size); - - scroll_to (view, x, y); - - gtk_signal_handler_block_by_data (GTK_OBJECT (priv->hadj), view); - gtk_signal_handler_block_by_data (GTK_OBJECT (priv->vadj), view); - - priv->hadj->value = x; - priv->vadj->value = y; - - gtk_signal_emit_by_name (GTK_OBJECT (priv->hadj), "value_changed"); - gtk_signal_emit_by_name (GTK_OBJECT (priv->vadj), "value_changed"); - - gtk_signal_handler_unblock_by_data (GTK_OBJECT (priv->hadj), view); - gtk_signal_handler_unblock_by_data (GTK_OBJECT (priv->vadj), view); - } - - return TRUE; -} - - -/* ---------------- * - * Widget interface * - * ---------------- */ - - -/** - * e_map_new: - * @void: - * - * Creates a new empty map widget. - * - * Return value: A newly-created map widget. - **/ - -EMap * -e_map_new () -{ - GtkWidget *widget; - - widget = GTK_WIDGET (gtk_type_new (TYPE_E_MAP)); - return (E_MAP (widget)); -} - - -/* --- Coordinate translation --- */ - - -/* These functions translate coordinates between longitude/latitude and - * the image x/y offsets, using the equidistant cylindrical projection. - * - * Longitude E <-180, 180] - * Latitude E <-90, 90] */ - -void -e_map_window_to_world (EMap *map, double win_x, double win_y, double *world_longitude, double *world_latitude) -{ - EMapPrivate *priv; - int width, height; - - g_return_if_fail (map); - - priv = map->priv; - g_return_if_fail (GTK_WIDGET_REALIZED (GTK_WIDGET (map))); - - width = gdk_pixbuf_get_width (priv->map_render_pixbuf); - height = gdk_pixbuf_get_height (priv->map_render_pixbuf); - - *world_longitude = (win_x + priv->xofs - (double) width / 2.0) / - ((double) width / 2.0) * 180.0; - *world_latitude = ((double) height / 2.0 - win_y - priv->yofs) / - ((double) height / 2.0) * 90.0; -} - - -void -e_map_world_to_window (EMap *map, double world_longitude, double world_latitude, double *win_x, double *win_y) -{ - EMapPrivate *priv; - int width, height; - - g_return_if_fail (map); - - priv = map->priv; - g_return_if_fail (priv->map_render_pixbuf); - g_return_if_fail (world_longitude >= -180.0 && world_longitude <= 180.0); - g_return_if_fail (world_latitude >= -90.0 && world_latitude <= 90.0); - - width = gdk_pixbuf_get_width (priv->map_render_pixbuf); - height = gdk_pixbuf_get_height (priv->map_render_pixbuf); - - *win_x = (width / 2.0 + (width / 2.0) * world_longitude / 180.0) - priv->xofs; - *win_y = (height / 2.0 - (height / 2.0) * world_latitude / 90.0) - priv->yofs; - -#ifdef DEBUG - printf ("Map size: (%d, %d)\nCoords: (%.1f, %.1f) -> (%.1f, %.1f)\n---\n", width, height, world_longitude, world_latitude, *win_x, *win_y); -#endif -} - - -/* --- Zoom --- */ - - -double -e_map_get_magnification (EMap *map) -{ - EMapPrivate *priv; - - priv = map->priv; - if (priv->zoom_state == E_MAP_ZOOMED_IN) return 2.0; - else return 1.0; -} - - -void -e_map_zoom_to_location (EMap *map, double longitude, double latitude) -{ - EMapPrivate *priv; - int width, height; - - g_return_if_fail (map); - g_return_if_fail (GTK_WIDGET_REALIZED (GTK_WIDGET (map))); - - priv = map->priv; - - if (priv->zoom_state == E_MAP_ZOOMED_IN) e_map_zoom_out (map); - else if (priv->zoom_state != E_MAP_ZOOMED_OUT) return; - - width = gdk_pixbuf_get_width (priv->map_render_pixbuf); - height = gdk_pixbuf_get_height (priv->map_render_pixbuf); - - priv->zoom_state = E_MAP_ZOOMING_IN; - priv->zoom_target_long = longitude; - priv->zoom_target_lat = latitude; - - zoom_do (map); -} - - -void -e_map_zoom_out (EMap *map) -{ - EMapPrivate *priv; - int width, height; - - g_return_if_fail (map); - g_return_if_fail (GTK_WIDGET_REALIZED (GTK_WIDGET (map))); - - priv = map->priv; - - if (priv->zoom_state != E_MAP_ZOOMED_IN) return; - - width = gdk_pixbuf_get_width (priv->map_render_pixbuf); - height = gdk_pixbuf_get_height (priv->map_render_pixbuf); - - priv->zoom_state = E_MAP_ZOOMING_OUT; - zoom_do (map); - priv->zoom_state = E_MAP_ZOOMED_OUT; -} - - -void -e_map_set_smooth_zoom (EMap *map, gboolean state) -{ - ((EMapPrivate *) map->priv)->smooth_zoom = state; -} - - -gboolean -e_map_get_smooth_zoom (EMap *map) -{ - return (((EMapPrivate *) map->priv)->smooth_zoom); -} - - -void -e_map_freeze (EMap *map) -{ - ((EMapPrivate *) map->priv)->frozen = TRUE; -} - - -void -e_map_thaw (EMap *map) -{ - ((EMapPrivate *) map->priv)->frozen = FALSE; - update_and_paint (map); -} - - -/* --- Point manipulation --- */ - - -EMapPoint * -e_map_add_point (EMap *map, gchar *name, double longitude, double latitude, guint32 color_rgba) -{ - EMapPrivate *priv; - EMapPoint *point; - - priv = map->priv; - point = g_new0 (EMapPoint, 1); - - point->name = name; /* Can be NULL */ - point->longitude = longitude; - point->latitude = latitude; - point->rgba = color_rgba; - - g_ptr_array_add (priv->points, (gpointer) point); - - if (!priv->frozen) - { - update_render_point (map, point); - repaint_point (map, point); - } - - return point; -} - - -void -e_map_remove_point (EMap *map, EMapPoint *point) -{ - EMapPrivate *priv; - - priv = map->priv; - g_ptr_array_remove (priv->points, point); - - if (!((EMapPrivate *) map->priv)->frozen) - { - /* FIXME: Re-scaling the whole pixbuf is more than a little - * overkill when just one point is removed */ - - update_render_pixbuf (map, GDK_INTERP_BILINEAR, TRUE); - repaint_point (map, point); - } - - g_free (point); -} - - -void -e_map_point_get_location (EMapPoint *point, double *longitude, double *latitude) -{ - *longitude = point->longitude; - *latitude = point->latitude; -} - - -gchar * -e_map_point_get_name (EMapPoint *point) -{ - return point->name; -} - - -guint32 -e_map_point_get_color_rgba (EMapPoint *point) -{ - return point->rgba; -} - - -void -e_map_point_set_color_rgba (EMap *map, EMapPoint *point, guint32 color_rgba) -{ - point->rgba = color_rgba; - - if (!((EMapPrivate *) map->priv)->frozen) - { - /* TODO: Redraw area around point only */ - - update_render_point (map, point); - repaint_point (map, point); - } -} - - -void -e_map_point_set_data (EMapPoint *point, gpointer data) -{ - point->user_data = data; -} - - -gpointer -e_map_point_get_data (EMapPoint *point) -{ - return point->user_data; -} - - -gboolean -e_map_point_is_in_view (EMap *map, EMapPoint *point) -{ - EMapPrivate *priv; - double x, y; - - priv = map->priv; - if (!priv->map_render_pixbuf) return FALSE; - - e_map_world_to_window (map, point->longitude, point->latitude, &x, &y); - - if (x >= 0 && x < GTK_WIDGET (map)->allocation.width && - y >= 0 && y < GTK_WIDGET (map)->allocation.height) - return TRUE; - - return FALSE; -} - - -EMapPoint * -e_map_get_closest_point (EMap *map, double longitude, double latitude, gboolean in_view) -{ - EMapPrivate *priv; - EMapPoint *point_chosen = NULL, *point; - double min_dist = 0.0, dist; - double dx, dy; - int i; - - priv = map->priv; - - for (i = 0; i < priv->points->len; i++) - { - point = g_ptr_array_index (priv->points, i); - if (in_view && !e_map_point_is_in_view (map, point)) continue; - - dx = point->longitude - longitude; - dy = point->latitude - latitude; - dist = dx * dx + dy * dy; - - if (!point_chosen || dist < min_dist) - { - min_dist = dist; - point_chosen = point; - } - } - - return point_chosen; -} - - -/* ------------------ * - * Internal functions * - * ------------------ */ - - -static void -repaint_visible (EMap *map) -{ - GdkRectangle area; - - area.x = 0; - area.y = 0; - area.width = GTK_WIDGET (map)->allocation.width; - area.height = GTK_WIDGET (map)->allocation.height; - - request_paint_area (map, &area); -} - - -static void -update_and_paint (EMap *map) -{ - update_render_pixbuf (map, GDK_INTERP_BILINEAR, TRUE); - repaint_visible (map); -} - - -static gint -load_map_background (EMap *view, gchar *name) -{ - EMapPrivate *priv; - GdkPixbuf *pb0; - - priv = view->priv; - - pb0 = gdk_pixbuf_new_from_file (name); -/* pb0 = tool_load_image (name);*/ - if (!pb0) return (FALSE); - - if (priv->map_pixbuf) gdk_pixbuf_unref (priv->map_pixbuf); - priv->map_pixbuf = pb0; - update_render_pixbuf (view, GDK_INTERP_BILINEAR, TRUE); - - return (TRUE); -} - - -static void -update_render_pixbuf (EMap *map, ArtFilterLevel interp, gboolean render_overlays) -{ - EMapPrivate *priv; - EMapPoint *point; - int width, height, orig_width, orig_height; - double zoom; - int i; - - if (!GTK_WIDGET_REALIZED (GTK_WIDGET (map))) return; - - /* Set up value shortcuts */ - - priv = map->priv; - width = GTK_WIDGET (map)->allocation.width; - height = GTK_WIDGET (map)->allocation.height; - orig_width = gdk_pixbuf_get_width (priv->map_pixbuf); - orig_height = gdk_pixbuf_get_height (priv->map_pixbuf); - - /* Compute scaled width and height based on the extreme dimension */ - - if ((double) width / orig_width > (double) height / orig_height) - { - zoom = (double) width / (double) orig_width; - } - else - { - zoom = (double) height / (double) orig_height; - } - - if (priv->zoom_state == E_MAP_ZOOMED_IN) zoom *= 2.0; - height = (orig_height * zoom) + 0.5; - width = (orig_width * zoom) + 0.5; - - /* Reallocate the pixbuf */ - - if (priv->map_render_pixbuf) gdk_pixbuf_unref (priv->map_render_pixbuf); - priv->map_render_pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, FALSE, /* No alpha */ - 8, width, height); - - /* Scale the original map into the rendering pixbuf */ - - if (width > 1 && height > 1) - { - gdk_pixbuf_scale (priv->map_pixbuf, priv->map_render_pixbuf, 0, 0, /* Dest (x, y) */ - width, height, 0, 0, /* Offset (x, y) */ - zoom, zoom, /* Scale (x, y) */ - interp); - } - - if (render_overlays) - { - /* Add points */ - - for (i = 0; i < priv->points->len; i++) - { - point = g_ptr_array_index (priv->points, i); - update_render_point (map, point); - } - } - - /* Compute image offsets with respect to window */ - - set_scroll_area (map); -} - - -/* Queues a repaint of the specified area in window coordinates */ - -static void -request_paint_area (EMap *view, GdkRectangle *area) -{ - EMapPrivate *priv; - int width, height; - - if (!GTK_WIDGET_DRAWABLE (GTK_WIDGET (view)) || - !GTK_WIDGET_REALIZED (GTK_WIDGET (view))) return; - - priv = view->priv; - if (!priv->map_render_pixbuf) return; - - width = MIN (area->width, E_MAP_GET_WIDTH (view)); - height = MIN (area->height, E_MAP_GET_HEIGHT (view)); - - /* This satisfies paranoia. To be removed */ - - if (priv->xofs + width > gdk_pixbuf_get_width (priv->map_render_pixbuf)) - width = gdk_pixbuf_get_width (priv->map_render_pixbuf) - priv->xofs; - - if (priv->yofs + height > gdk_pixbuf_get_height (priv->map_render_pixbuf)) - height = gdk_pixbuf_get_height (priv->map_render_pixbuf) - priv->yofs; - - /* We rely on the fast case always being the case, since we load and - * preprocess the source pixbuf ourselves */ - - if (gdk_pixbuf_get_colorspace (priv->map_render_pixbuf) == GDK_COLORSPACE_RGB && !gdk_pixbuf_get_has_alpha (priv->map_render_pixbuf) && - gdk_pixbuf_get_bits_per_sample (priv->map_render_pixbuf) == 8) - { - guchar *pixels; - int rowstride; - - rowstride = gdk_pixbuf_get_rowstride (priv->map_render_pixbuf); - pixels = gdk_pixbuf_get_pixels (priv->map_render_pixbuf) + (area->y + priv->yofs) * rowstride + 3 * (area->x + priv->xofs); - gdk_draw_rgb_image_dithalign (GTK_WIDGET (view)->window, GTK_WIDGET (view)->style->black_gc, area->x, area->y, width, height, GDK_RGB_DITHER_NORMAL, pixels, rowstride, 0, 0); - return; - } - -#ifdef DEBUG - g_print ("Doing hard redraw.\n"); -#endif -} - -static void -put_pixel_with_clipping (GdkPixbuf *pixbuf, gint x, gint y, guint rgba) -{ - gint width, height; - gint rowstride, n_channels; - guchar *pixels, *pixel; - - width = gdk_pixbuf_get_width (pixbuf); - height = gdk_pixbuf_get_height (pixbuf); - rowstride = gdk_pixbuf_get_rowstride (pixbuf); - n_channels = gdk_pixbuf_get_n_channels (pixbuf); - pixels = gdk_pixbuf_get_pixels (pixbuf); - - if (x < 0 || x >= width || y < 0 || y >= height) - return; - - pixel = pixels + (y * rowstride) + (x * n_channels); - - *pixel = (rgba >> 24); - *(pixel + 1) = (rgba >> 16) & 0x000000ff; - *(pixel + 2) = (rgba >> 8) & 0x000000ff; - - if (n_channels > 3) - { - *(pixel + 3) = rgba & 0x000000ff; - } -} - - -/* Redraw point in client pixbuf */ - -static void -update_render_point (EMap *map, EMapPoint *point) -{ - EMapPrivate *priv; - GdkPixbuf *pb; - int width, height; - double px, py; - - priv = map->priv; - pb = priv->map_render_pixbuf; - if (!pb) return; - - width = gdk_pixbuf_get_width (pb); - height = gdk_pixbuf_get_height (pb); - - e_map_world_to_window (map, point->longitude, point->latitude, &px, &py); - px += priv->xofs; - py += priv->yofs; - - put_pixel_with_clipping (pb, px, py, point->rgba); - put_pixel_with_clipping (pb, px - 1, py, point->rgba); - put_pixel_with_clipping (pb, px + 1, py, point->rgba); - put_pixel_with_clipping (pb, px, py - 1, point->rgba); - put_pixel_with_clipping (pb, px, py + 1, point->rgba); - - put_pixel_with_clipping (pb, px - 2, py, 0x000000ff); - put_pixel_with_clipping (pb, px + 2, py, 0x000000ff); - put_pixel_with_clipping (pb, px, py - 2, 0x000000ff); - put_pixel_with_clipping (pb, px, py + 2, 0x000000ff); - put_pixel_with_clipping (pb, px - 1, py - 1, 0x000000ff); - put_pixel_with_clipping (pb, px - 1, py + 1, 0x000000ff); - put_pixel_with_clipping (pb, px + 1, py - 1, 0x000000ff); - put_pixel_with_clipping (pb, px + 1, py + 1, 0x000000ff); -} - - -/* Repaint point on X server */ - -static void -repaint_point (EMap *map, EMapPoint *point) -{ - EMapPrivate *priv; - GdkRectangle area; - double px, py; - - if (!e_map_point_is_in_view (map, point)) return; - priv = map->priv; - - e_map_world_to_window (map, point->longitude, point->latitude, &px, &py); - - area.x = (int) px - 2; - area.y = (int) py - 2; - area.width = 5; - area.height = 5; - request_paint_area (map, &area); -} - - -static void -center_at (EMap *map, int x, int y, gboolean scroll) -{ - EMapPrivate *priv; - int pb_width, pb_height, - view_width, view_height; - - priv = map->priv; - - pb_width = E_MAP_GET_WIDTH (map); - pb_height = E_MAP_GET_HEIGHT (map); - - view_width = GTK_WIDGET (map)->allocation.width; - view_height = GTK_WIDGET (map)->allocation.height; - - x = CLAMP (x - (view_width / 2), 0, pb_width - view_width); - y = CLAMP (y - (view_height / 2), 0, pb_height - view_height); - - if (scroll) scroll_to (map, x, y); - else - { - priv->xofs = x; - priv->yofs = y; - } -} - - -static void -smooth_center_at (EMap *map, int x, int y) -{ - EMapPrivate *priv; - int pb_width, pb_height, - view_width, view_height; - int dx, dy; - - priv = map->priv; - - pb_width = E_MAP_GET_WIDTH (map); - pb_height = E_MAP_GET_HEIGHT (map); - - view_width = GTK_WIDGET (map)->allocation.width; - view_height = GTK_WIDGET (map)->allocation.height; - - x = CLAMP (x - (view_width / 2), 0, pb_width - view_width); - y = CLAMP (y - (view_height / 2), 0, pb_height - view_height); - - for (;;) - { - if (priv->xofs == x && priv->yofs == y) break; - - dx = (x < priv->xofs) ? -1 : (x > priv->xofs) ? 1 : 0; - dy = (y < priv->yofs) ? -1 : (y > priv->yofs) ? 1 : 0; - - scroll_to (map, priv->xofs + dx, priv->yofs + dy); - } -} - - -/* Scrolls the view to the specified offsets. Does not perform range checking! */ - -static void -scroll_to (EMap *view, int x, int y) -{ - EMapPrivate *priv; - int xofs, yofs; - GdkWindow *window; - GdkGC *gc; - int width, height; - int src_x, src_y; - int dest_x, dest_y; - GdkEvent *event; - - priv = view->priv; - - /* Compute offsets and check bounds */ - - xofs = x - priv->xofs; - yofs = y - priv->yofs; - - if (xofs == 0 && yofs == 0) return; - - priv->xofs = x; - priv->yofs = y; - - if (!GTK_WIDGET_DRAWABLE (view)) return; - - width = GTK_WIDGET (view)->allocation.width; - height = GTK_WIDGET (view)->allocation.height; - - if (abs (xofs) >= width || abs (yofs) >= height) - { - GdkRectangle area; - - area.x = 0; - area.y = 0; - area.width = width; - area.height = height; - - request_paint_area (view, &area); - return; - } - - window = GTK_WIDGET (view)->window; - - /* Copy the window area */ - - src_x = xofs < 0 ? 0 : xofs; - src_y = yofs < 0 ? 0 : yofs; - dest_x = xofs < 0 ? -xofs : 0; - dest_y = yofs < 0 ? -yofs : 0; - - gc = gdk_gc_new (window); - gdk_gc_set_exposures (gc, TRUE); - - gdk_window_copy_area (window, gc, dest_x, dest_y, window, src_x, src_y, width - abs (xofs), height - abs (yofs)); - - gdk_gc_destroy (gc); - - /* Add the scrolled-in region */ - - if (xofs) - { - GdkRectangle r; - - r.x = xofs < 0 ? 0 : width - xofs; - r.y = 0; - r.width = abs (xofs); - r.height = height; - - request_paint_area (view, &r); - } - - if (yofs) - { - GdkRectangle r; - - r.x = 0; - r.y = yofs < 0 ? 0 : height - yofs; - r.width = width; - r.height = abs (yofs); - - request_paint_area (view, &r); - } - - /* Process graphics exposures */ - - while ((event = gdk_event_get_graphics_expose (window)) != NULL) - { - gtk_widget_event (GTK_WIDGET (view), event); - - if (event->expose.count == 0) - { - gdk_event_free (event); - break; - } - - gdk_event_free (event); - } -} - - -static int divide_seq[] = -{ - /* Dividends for divisor of 2 */ - - -2, - - 1, - - /* Dividends for divisor of 4 */ - - -4, - - 1, 3, - - /* Dividends for divisor of 8 */ - - -8, - - 1, 5, 3, 7, - - /* Dividends for divisor of 16 */ - - -16, - - 1, 9, 5, 13, 3, 11, 7, 15, - - /* Dividends for divisor of 32 */ - - -32, - - 1, 17, 9, 25, 5, 21, 13, 29, 3, 19, - 11, 27, 7, 23, 15, 31, - - /* Dividends for divisor of 64 */ - - -64, - - 1, 33, 17, 49, 9, 41, 25, 57, 5, 37, - 21, 53, 13, 45, 29, 61, 3, 35, 19, 51, - 11, 43, 27, 59, 7, 39, 23, 55, 15, 47, - 31, 63, - - /* Dividends for divisor of 128 */ - - -128, - - 1, 65, 33, 97, 17, 81, 49, 113, 9, 73, - 41, 105, 25, 89, 57, 121, 5, 69, 37, 101, - 21, 85, 53, 117, 13, 77, 45, 109, 29, 93, - 61, 125, 3, 67, 35, 99, 19, 83, 51, 115, - 11, 75, 43, 107, 27, 91, 59, 123, 7, 71, - 39, 103, 23, 87, 55, 119, 15, 79, 47, 111, - 31, 95, 63, 127, - - /* Dividends for divisor of 256 */ - - -256, - - 1, 129, 65, 193, 33, 161, 97, 225, 17, 145, - 81, 209, 49, 177, 113, 241, 9, 137, 73, 201, - 41, 169, 105, 233, 25, 153, 89, 217, 57, 185, - 121, 249, 5, 133, 69, 197, 37, 165, 101, 229, - 21, 149, 85, 213, 53, 181, 117, 245, 13, 141, - 77, 205, 45, 173, 109, 237, 29, 157, 93, 221, - 61, 189, 125, 253, 3, 131, 67, 195, 35, 163, - 99, 227, 19, 147, 83, 211, 51, 179, 115, 243, - 11, 139, 75, 203, 43, 171, 107, 235, 27, 155, - 91, 219, 59, 187, 123, 251, 7, 135, 71, 199, - 39, 167, 103, 231, 23, 151, 87, 215, 55, 183, - 119, 247, 15, 143, 79, 207, 47, 175, 111, 239, - 31, 159, 95, 223, 63, 191, 127, 255, - - 0 -}; - - -typedef enum -{ - AXIS_X, - AXIS_Y -} -AxisType; - - -static void -blowup_window_area (GdkWindow *window, gint area_x, gint area_y, gint target_x, gint target_y, gint total_width, gint total_height, gfloat zoom_factor) -{ - GdkGC *gc; - AxisType strong_axis; - gfloat axis_factor, axis_counter; - gint zoom_chunk; - gint divisor_width = 0, divisor_height = 0; - gint divide_width_index, divide_height_index; - gint area_width, area_height; - gint i, j; - int line; - - - /* Set up the GC we'll be using */ - - gc = gdk_gc_new (window); - gdk_gc_set_exposures (gc, FALSE); - - /* Get area constraints */ - - gdk_window_get_size (window, &area_width, &area_height); - - /* Initialize area division array indexes */ - - divide_width_index = divide_height_index = 0; - - /* Initialize axis counter */ - - axis_counter = 0.0; - - /* Find the strong axis (which is the basis for iteration) and the ratio - * at which the other axis will be scaled. - * - * Also determine how many lines to expand in one fell swoop, and store - * this figure in zoom_chunk. */ - - if (area_width > area_height) - { - strong_axis = AXIS_X; - axis_factor = (double) area_height / (double) area_width; - zoom_chunk = MAX (1, area_width / 250); - i = (area_width * (zoom_factor - 1.0)) / zoom_chunk; - } - else - { - strong_axis = AXIS_Y; - axis_factor = (double) area_width / (double) area_height; - zoom_chunk = MAX (1, area_height / 250); - i = (area_height * (zoom_factor - 1.0)) / zoom_chunk; - } - - /* Go, go, devil bunnies! Gogo devil bunnies! */ - - for (; i > 0; i--) - { - /* Reset division sequence table indexes as necessary */ - - if (!divide_seq[divide_width_index]) divide_width_index = 0; - if (!divide_seq[divide_height_index]) divide_height_index = 0; - - /* Set new divisor if found in table */ - - if (divide_seq[divide_width_index] < 0) - divisor_width = abs (divide_seq[divide_width_index++]); - if (divide_seq[divide_height_index] < 0) - divisor_height = abs (divide_seq[divide_height_index++]); - - /* Widen */ - - if (strong_axis == AXIS_X || axis_counter >= 1.0) - { - line = ((divide_seq[divide_width_index] * area_width) / divisor_width) + 0.5; - - if ((line < target_x && target_x > area_width / 2) || (line > target_x && target_x > (area_width / 2) + zoom_chunk)) - { - /* Push left */ - - for (j = 0; j < zoom_chunk - 1; j++) - gdk_window_copy_area (window, gc, line + j + 1, 0, window, line, 0, 1, area_height); - - gdk_window_copy_area (window, gc, 0, 0, window, zoom_chunk, 0, line, area_height); - if (line > target_x) target_x -= zoom_chunk; - } - else - { - /* Push right */ - - for (j = 0; j < zoom_chunk - 1; j++) - gdk_window_copy_area (window, gc, line + j - (zoom_chunk - 1), 0, window, line - zoom_chunk, 0, 1, area_height); - - gdk_window_copy_area (window, gc, line, 0, window, line - zoom_chunk, 0, area_width - line, area_height); - if (line < target_x) target_x += zoom_chunk; - } - } - - if (strong_axis == AXIS_Y || axis_counter >= 1.0) - { - /* Heighten */ - - line = ((divide_seq[divide_height_index] * area_height) / divisor_height) + 0.5; - - if ((line < target_y && target_y > area_height / 2) || (line > target_y && target_y > (area_height / 2) + zoom_chunk)) - { - /* Push up */ - - for (j = 0; j < zoom_chunk - 1; j++) - gdk_window_copy_area (window, gc, 0, line + j + 1, window, 0, line, area_width, 1); - - gdk_window_copy_area (window, gc, 0, 0, window, 0, zoom_chunk, area_width, line); - if (line > target_y) target_y -= zoom_chunk; - } - else - { - /* Push down */ - - for (j = 0; j < zoom_chunk - 1; j++) - gdk_window_copy_area (window, gc, 0, line + j - (zoom_chunk - 1), window, 0, line - zoom_chunk, area_width, 1); - - gdk_window_copy_area (window, gc, 0, line, window, 0, line - zoom_chunk, area_width, area_height - line); - if (line < target_y) target_y += zoom_chunk; - } - } - - divide_width_index++; - divide_height_index++; - if (axis_counter >= 1.0) axis_counter -= 1.0; - axis_counter += axis_factor; - } - - /* Free our GC */ - - gdk_gc_destroy (gc); -} - - -static void -zoom_in_smooth (EMap *map) -{ - GdkRectangle area; - EMapPrivate *priv; - GdkWindow *window; - int width, height; - int win_width, win_height; - int target_width, target_height; - double x, y; - - g_return_if_fail (map); - g_return_if_fail (GTK_WIDGET_REALIZED (GTK_WIDGET (map))); - - area.x = 0; - area.y = 0; - area.width = GTK_WIDGET (map)->allocation.width; - area.height = GTK_WIDGET (map)->allocation.height; - - priv = map->priv; - window = GTK_WIDGET (map)->window; - width = gdk_pixbuf_get_width (priv->map_render_pixbuf); - height = gdk_pixbuf_get_height (priv->map_render_pixbuf); - win_width = GTK_WIDGET (map)->allocation.width; - win_height = GTK_WIDGET (map)->allocation.height; - target_width = win_width / 4; - target_height = win_height / 4; - - /* Center the target point as much as possible */ - - e_map_world_to_window (map, priv->zoom_target_long, priv->zoom_target_lat, &x, &y); - smooth_center_at (map, x + priv->xofs, y + priv->yofs); - - /* Render and paint a temporary map without overlays, so they don't get in - * the way (look ugly) while zooming */ - - update_render_pixbuf (map, GDK_INTERP_BILINEAR, FALSE); - request_paint_area (map, &area); - - /* Find out where in the area we're going to zoom to */ - - e_map_world_to_window (map, priv->zoom_target_long, priv->zoom_target_lat, &x, &y); - - /* Pre-render the zoomed-in map, so we can put it there quickly when the - * blowup sequence ends */ - - priv->zoom_state = E_MAP_ZOOMED_IN; - update_render_pixbuf (map, GDK_INTERP_BILINEAR, TRUE); - - /* Do the blowup */ - - blowup_window_area (window, priv->xofs, priv->yofs, x, y, width, height, 1.68); - - /* Set new scroll offsets and paint the zoomed map */ - - e_map_world_to_window (map, priv->zoom_target_long, priv->zoom_target_lat, &x, &y); - priv->xofs = CLAMP (priv->xofs + x - area.width / 2.0, 0, E_MAP_GET_WIDTH (map) - area.width); - priv->yofs = CLAMP (priv->yofs + y - area.height / 2.0, 0, E_MAP_GET_HEIGHT (map) - area.height); - - request_paint_area (map, &area); -} - - -static void -zoom_in (EMap *map) -{ - GdkRectangle area; - EMapPrivate *priv; - double x, y; - - priv = map->priv; - - area.x = 0; - area.y = 0; - area.width = GTK_WIDGET (map)->allocation.width; - area.height = GTK_WIDGET (map)->allocation.height; - - priv->zoom_state = E_MAP_ZOOMED_IN; - - update_render_pixbuf (map, GDK_INTERP_BILINEAR, TRUE); - - e_map_world_to_window (map, priv->zoom_target_long, priv->zoom_target_lat, &x, &y); - priv->xofs = CLAMP (priv->xofs + x - area.width / 2.0, 0, E_MAP_GET_WIDTH (map) - area.width); - priv->yofs = CLAMP (priv->yofs + y - area.height / 2.0, 0, E_MAP_GET_HEIGHT (map) - area.height); - - request_paint_area (map, &area); -} - - -static void -zoom_out (EMap *map) -{ - GdkRectangle area; - EMapPrivate *priv; - double longitude, latitude; - double x, y; - - priv = map->priv; - - area.x = 0; - area.y = 0; - area.width = GTK_WIDGET (map)->allocation.width; - area.height = GTK_WIDGET (map)->allocation.height; - - /* Must be done before update_render_pixbuf() */ - - e_map_window_to_world (map, area.width / 2, area.height / 2, - &longitude, &latitude); - - priv->zoom_state = E_MAP_ZOOMED_OUT; - update_render_pixbuf (map, GDK_INTERP_BILINEAR, TRUE); - - e_map_world_to_window (map, longitude, latitude, &x, &y); - center_at (map, x + priv->xofs, y + priv->yofs, FALSE); -/* request_paint_area (map, &area); */ - repaint_visible (map); -} - - -static void -zoom_do (EMap *map) -{ - EMapPrivate *priv; - - priv = map->priv; - - gtk_signal_handler_block_by_data (GTK_OBJECT (priv->hadj), map); - gtk_signal_handler_block_by_data (GTK_OBJECT (priv->vadj), map); - - if (priv->zoom_state == E_MAP_ZOOMING_IN) - { - if (e_map_get_smooth_zoom (map)) zoom_in_smooth (map); - else zoom_in (map); - } - else if (priv->zoom_state == E_MAP_ZOOMING_OUT) - { -/* if (e_map_get_smooth_zoom(map)) zoom_out_smooth(map); */ - zoom_out (map); - } - - gtk_signal_handler_unblock_by_data (GTK_OBJECT (priv->hadj), map); - gtk_signal_handler_unblock_by_data (GTK_OBJECT (priv->vadj), map); - - set_scroll_area(map); -} - - -/* Callback used when an adjustment is changed */ - -static void -adjustment_changed_cb (GtkAdjustment *adj, gpointer data) -{ - EMap *view; - EMapPrivate *priv; - - view = E_MAP (data); - priv = view->priv; - - scroll_to (view, priv->hadj->value, priv->vadj->value); -} - - -static void -set_scroll_area (EMap *view) -{ - EMapPrivate *priv; - - priv = view->priv; - - if (!GTK_WIDGET_REALIZED (GTK_WIDGET (view))) return; - if (!priv->hadj || !priv->vadj) return; - - /* Set scroll increments */ - - priv->hadj->page_size = GTK_WIDGET (view)->allocation.width; - priv->hadj->page_increment = GTK_WIDGET (view)->allocation.width / 2; - priv->hadj->step_increment = SCROLL_STEP_SIZE; - - priv->vadj->page_size = GTK_WIDGET (view)->allocation.height; - priv->vadj->page_increment = GTK_WIDGET (view)->allocation.height / 2; - priv->vadj->step_increment = SCROLL_STEP_SIZE; - - /* Set scroll bounds and new offsets */ - - priv->hadj->lower = 0; - if (priv->map_render_pixbuf) - priv->hadj->upper = gdk_pixbuf_get_width (priv->map_render_pixbuf); - - priv->vadj->lower = 0; - if (priv->map_render_pixbuf) - priv->vadj->upper = gdk_pixbuf_get_height (priv->map_render_pixbuf); - - gtk_signal_emit_by_name (GTK_OBJECT (priv->hadj), "changed"); - gtk_signal_emit_by_name (GTK_OBJECT (priv->vadj), "changed"); - - priv->xofs = CLAMP (priv->xofs, 0, priv->hadj->upper - priv->hadj->page_size); - priv->yofs = CLAMP (priv->yofs, 0, priv->vadj->upper - priv->vadj->page_size); - - if (priv->hadj->value != priv->xofs) - { - priv->hadj->value = priv->xofs; - - gtk_signal_handler_block_by_data (GTK_OBJECT (priv->hadj), view); - gtk_signal_emit_by_name (GTK_OBJECT (priv->hadj), "value_changed"); - gtk_signal_handler_unblock_by_data (GTK_OBJECT (priv->hadj), view); - } - - if (priv->vadj->value != priv->yofs) - { - priv->vadj->value = priv->yofs; - - gtk_signal_handler_block_by_data (GTK_OBJECT (priv->vadj), view); - gtk_signal_emit_by_name (GTK_OBJECT (priv->vadj), "value_changed"); - gtk_signal_handler_unblock_by_data (GTK_OBJECT (priv->vadj), view); - } -} |