diff options
Diffstat (limited to 'widgets/misc/e-reflow.c')
| -rw-r--r-- | widgets/misc/e-reflow.c | 1378 |
1 files changed, 0 insertions, 1378 deletions
diff --git a/widgets/misc/e-reflow.c b/widgets/misc/e-reflow.c deleted file mode 100644 index f628dec126..0000000000 --- a/widgets/misc/e-reflow.c +++ /dev/null @@ -1,1378 +0,0 @@ -/* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8 -*- */ -/* - * e-reflow.c - * Copyright 2000, 2001, Ximian, Inc. - * - * Authors: - * Chris Lahey <clahey@ximian.com> - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License, version 2, as published by the Free Software Foundation. - * - * This library 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 - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA - * 02111-1307, USA. - */ - -#include <config.h> - -#include "e-reflow.h" - -#include <math.h> -#include <gdk/gdkkeysyms.h> -#include "e-canvas-utils.h" -#include "e-canvas.h" -#include "gal/e-text/e-text.h" -#include "gal/util/e-util.h" -#include "gal/widgets/e-unicode.h" -#include <gtk/gtksignal.h> -#include "e-selection-model-simple.h" - -#include <string.h> - -static gboolean e_reflow_event (GnomeCanvasItem *item, GdkEvent *event); -static void e_reflow_realize (GnomeCanvasItem *item); -static void e_reflow_unrealize (GnomeCanvasItem *item); -static void e_reflow_draw (GnomeCanvasItem *item, GdkDrawable *drawable, - int x, int y, int width, int height); -static void e_reflow_update (GnomeCanvasItem *item, double affine[6], ArtSVP *clip_path, gint flags); -static double e_reflow_point (GnomeCanvasItem *item, double x, double y, int cx, int cy, GnomeCanvasItem **actual_item); -static void e_reflow_reflow (GnomeCanvasItem *item, int flags); -static void set_empty(EReflow *reflow); - -static void e_reflow_resize_children (GnomeCanvasItem *item); - -#define E_REFLOW_DIVIDER_WIDTH 2 -#define E_REFLOW_BORDER_WIDTH 7 -#define E_REFLOW_FULL_GUTTER (E_REFLOW_DIVIDER_WIDTH + E_REFLOW_BORDER_WIDTH * 2) - -static GnomeCanvasGroupClass *parent_class = NULL; - -/* The arguments we take */ -enum { - ARG_0, - ARG_MINIMUM_WIDTH, - ARG_WIDTH, - ARG_HEIGHT, - ARG_EMPTY_MESSAGE, - ARG_MODEL, - ARG_COLUMN_WIDTH, -}; - -enum { - SELECTION_EVENT, - COLUMN_WIDTH_CHANGED, - LAST_SIGNAL -}; - -static guint signals [LAST_SIGNAL] = {0, }; - -static gint -er_compare (int i1, int i2, gpointer user_data) -{ - EReflow *reflow = user_data; - return e_reflow_model_compare (reflow->model, i1, i2); -} - -static gint -e_reflow_pick_line (EReflow *reflow, double x) -{ - x += E_REFLOW_BORDER_WIDTH + E_REFLOW_DIVIDER_WIDTH; - x /= reflow->column_width + E_REFLOW_FULL_GUTTER; - return x; -} - -static int -er_find_item (EReflow *reflow, GnomeCanvasItem *item) -{ - int i; - for (i = 0; i < reflow->count; i++) { - if (reflow->items[i] == item) - return i; - } - return -1; -} - -static void -e_reflow_resize_children (GnomeCanvasItem *item) -{ - EReflow *reflow; - int i; - int count; - - reflow = E_REFLOW (item); - - count = reflow->count; - for (i = 0; i < count; i++) { - if (reflow->items[i]) - gnome_canvas_item_set(reflow->items[i], - "width", (double) reflow->column_width, - NULL); - } -} - -static inline void -e_reflow_update_selection_row (EReflow *reflow, int row) -{ - if (reflow->items[row]) { - gtk_object_set(GTK_OBJECT(reflow->items[row]), - "selected", e_selection_model_is_row_selected(E_SELECTION_MODEL(reflow->selection), row), - NULL); - } else if (e_selection_model_is_row_selected (E_SELECTION_MODEL (reflow->selection), row)) { - reflow->items[row] = e_reflow_model_incarnate (reflow->model, row, GNOME_CANVAS_GROUP (reflow)); - gtk_object_set (GTK_OBJECT (reflow->items[row]), - "selected", e_selection_model_is_row_selected(E_SELECTION_MODEL(reflow->selection), row), - "width", (double) reflow->column_width, - NULL); - } -} - -static void -e_reflow_update_selection (EReflow *reflow) -{ - int i; - int count; - - count = reflow->count; - for (i = 0; i < count; i++) { - e_reflow_update_selection_row (reflow, i); - } -} - -static void -selection_changed (ESelectionModel *selection, EReflow *reflow) -{ - e_reflow_update_selection (reflow); -} - -static void -selection_row_changed (ESelectionModel *selection, int row, EReflow *reflow) -{ - e_reflow_update_selection_row (reflow, row); -} - -static void -cursor_changed (ESelectionModel *selection, int row, int col, EReflow *reflow) -{ - int count = reflow->count; - int old_cursor = reflow->cursor_row; - - if (old_cursor < count && old_cursor >= 0) { - if (reflow->items[old_cursor]) { - gtk_object_set (GTK_OBJECT (reflow->items[old_cursor]), - "has_cursor", FALSE, - NULL); - } - } - - reflow->cursor_row = row; - - if (row < count && row >= 0) { - if (reflow->items[row]) { - gtk_object_set (GTK_OBJECT (reflow->items[row]), - "has_cursor", TRUE, - NULL); - } else { - reflow->items[row] = e_reflow_model_incarnate (reflow->model, row, GNOME_CANVAS_GROUP (reflow)); - gtk_object_set (GTK_OBJECT (reflow->items[row]), - "has_cursor", TRUE, - "width", (double) reflow->column_width, - NULL); - } - } -} - -static void -incarnate (EReflow *reflow) -{ - int column_width; - int first_column; - int last_column; - int first_cell; - int last_cell; - int i; - GtkAdjustment *adjustment = gtk_layout_get_hadjustment (GTK_LAYOUT (GNOME_CANVAS_ITEM (reflow)->canvas)); - - column_width = reflow->column_width; - - first_column = adjustment->value - 1 + E_REFLOW_BORDER_WIDTH; - first_column /= column_width + E_REFLOW_FULL_GUTTER; - - last_column = adjustment->value + adjustment->page_size + 1 - E_REFLOW_BORDER_WIDTH - E_REFLOW_DIVIDER_WIDTH; - last_column /= column_width + E_REFLOW_FULL_GUTTER; - last_column ++; - - if (first_column >= 0 && first_column < reflow->column_count) - first_cell = reflow->columns[first_column]; - else - first_cell = 0; - - if (last_column >= 0 && last_column < reflow->column_count) - last_cell = reflow->columns[last_column]; - else - last_cell = reflow->count; - - for (i = first_cell; i < last_cell; i++) { - int unsorted = e_sorter_sorted_to_model (E_SORTER (reflow->sorter), i); - if (reflow->items[unsorted] == NULL) { - if (reflow->model) { - reflow->items[unsorted] = e_reflow_model_incarnate (reflow->model, unsorted, GNOME_CANVAS_GROUP (reflow)); - gtk_object_set (GTK_OBJECT (reflow->items[unsorted]), - "selected", e_selection_model_is_row_selected(E_SELECTION_MODEL(reflow->selection), unsorted), - "width", (double) reflow->column_width, - NULL); - } - } - } - reflow->incarnate_idle_id = 0; -} - -static gboolean -invoke_incarnate (gpointer user_data) -{ - EReflow *reflow = user_data; - incarnate (reflow); - return FALSE; -} - -static void -queue_incarnate (EReflow *reflow) -{ - if (reflow->incarnate_idle_id == 0) - reflow->incarnate_idle_id = - g_idle_add_full (25, invoke_incarnate, reflow, NULL); -} - -static void -reflow_columns (EReflow *reflow) -{ - GSList *list; - int count; - int i; - int column_count; - double running_height; - - g_free (reflow->columns); - reflow->column_count = 0; - reflow->columns = NULL; - - list = NULL; - - running_height = E_REFLOW_BORDER_WIDTH; - column_count = 1; - - count = reflow->count; - for (i = 0; i < count; i++) { - int unsorted = e_sorter_sorted_to_model (E_SORTER (reflow->sorter), i); - if (reflow->heights[unsorted] == -1) { - if (reflow->model) - reflow->heights[unsorted] = e_reflow_model_height (reflow->model, unsorted, GNOME_CANVAS_GROUP (reflow)); - else - reflow->heights[unsorted] = 0; - } - if (i != 0 && running_height + reflow->heights[unsorted] + E_REFLOW_BORDER_WIDTH > reflow->height) { - list = g_slist_prepend (list, GINT_TO_POINTER(i)); - column_count ++; - running_height = E_REFLOW_BORDER_WIDTH * 2 + reflow->heights[unsorted]; - } else - running_height += reflow->heights[unsorted] + E_REFLOW_BORDER_WIDTH; - } - - reflow->column_count = column_count; - reflow->columns = g_new (int, column_count); - column_count --; - for (; column_count > 0; column_count--) { - GSList *to_free; - reflow->columns[column_count] = GPOINTER_TO_INT(list->data); - to_free = list; - list = list->next; - g_slist_free_1 (to_free); - } - reflow->columns[0] = 0; - - queue_incarnate (reflow); - - reflow->need_reflow_columns = FALSE; -} - -static void -item_changed (EReflowModel *model, int i, EReflow *reflow) -{ - if (i < 0 || i >= reflow->count) - return; - - reflow->heights[i] = -1; - if (reflow->items[i] != NULL) - e_reflow_model_reincarnate (model, i, reflow->items[i]); - e_sorter_array_clean (reflow->sorter); - reflow->need_reflow_columns = TRUE; - e_canvas_item_request_reflow(GNOME_CANVAS_ITEM (reflow)); -} - -static void -items_inserted (EReflowModel *model, int position, int count, EReflow *reflow) -{ - int i; - int oldcount; - if (position < 0 || position > reflow->count) - return; - - oldcount = reflow->count; - - reflow->count += count; - - if (reflow->count > reflow->allocated_count) { - while (reflow->count > reflow->allocated_count) - reflow->allocated_count += 256; - reflow->heights = g_renew (int, reflow->heights, reflow->allocated_count); - reflow->items = g_renew (GnomeCanvasItem *, reflow->items, reflow->allocated_count); - } - memmove (reflow->heights + position + count, reflow->heights + position, (reflow->count - position - count) * sizeof (int)); - memmove (reflow->items + position + count, reflow->items + position, (reflow->count - position - count) * sizeof (GnomeCanvasItem *)); - for (i = position; i < position + count; i++) { - reflow->items[i] = 0; - reflow->heights[i] = -1; - } - - e_selection_model_simple_set_row_count (E_SELECTION_MODEL_SIMPLE (reflow->selection), reflow->count); - if (position == oldcount) - e_sorter_array_append (reflow->sorter, count); - else - e_sorter_array_set_count (reflow->sorter, reflow->count); - reflow->need_reflow_columns = TRUE; - set_empty (reflow); - e_canvas_item_request_reflow(GNOME_CANVAS_ITEM (reflow)); -} - -static void -model_changed (EReflowModel *model, EReflow *reflow) -{ - int i; - int count; - int oldcount; - - count = reflow->count; - oldcount = count; - - for (i = 0; i < count; i++) { - if (reflow->items[i]) - gtk_object_destroy (GTK_OBJECT (reflow->items[i])); - } - g_free (reflow->items); - g_free (reflow->heights); - reflow->count = e_reflow_model_count (model); - reflow->allocated_count = reflow->count; - reflow->items = g_new (GnomeCanvasItem *, reflow->count); - reflow->heights = g_new (int, reflow->count); - - count = reflow->count; - for (i = 0; i < count; i++) { - reflow->items[i] = 0; - reflow->heights[i] = -1; - } - - e_selection_model_simple_set_row_count (E_SELECTION_MODEL_SIMPLE (reflow->selection), count); - e_sorter_array_set_count (reflow->sorter, reflow->count); - - reflow->need_reflow_columns = TRUE; - if (oldcount > reflow->count) - reflow_columns (reflow); - set_empty (reflow); - e_canvas_item_request_reflow(GNOME_CANVAS_ITEM (reflow)); -} - -static void -set_empty(EReflow *reflow) -{ - if (reflow->count == 0) { - if (reflow->empty_text) { - if (reflow->empty_message) { - char *empty_message = e_utf8_to_gtk_string (GTK_WIDGET (GNOME_CANVAS_ITEM (reflow)->canvas), reflow->empty_message); - gnome_canvas_item_set(reflow->empty_text, - "width", reflow->minimum_width, - "text", empty_message, - NULL); - e_canvas_item_move_absolute(reflow->empty_text, - reflow->minimum_width / 2, - 0); - g_free (empty_message); - } else { - gtk_object_destroy(GTK_OBJECT(reflow->empty_text)); - reflow->empty_text = NULL; - } - } else { - if (reflow->empty_message) { - char *empty_message = e_utf8_to_gtk_string (GTK_WIDGET (GNOME_CANVAS_ITEM (reflow)->canvas), reflow->empty_message); - reflow->empty_text = - gnome_canvas_item_new(GNOME_CANVAS_GROUP(reflow), - e_text_get_type(), - "anchor", GTK_ANCHOR_N, - "width", reflow->minimum_width, - "clip", TRUE, - "use_ellipsis", TRUE, - "font_gdk", GTK_WIDGET(GNOME_CANVAS_ITEM(reflow)->canvas)->style->font, - "fill_color", "black", - "justification", GTK_JUSTIFY_CENTER, - "text", empty_message, - "draw_background", FALSE, - NULL); - g_free (empty_message); - e_canvas_item_move_absolute(reflow->empty_text, - reflow->minimum_width / 2, - 0); - } - } - } else { - if (reflow->empty_text) { - gtk_object_destroy(GTK_OBJECT(reflow->empty_text)); - reflow->empty_text = NULL; - } - } -} - -static void -disconnect_model (EReflow *reflow) -{ - if (reflow->model == NULL) - return; - - gtk_signal_disconnect (GTK_OBJECT (reflow->model), - reflow->model_changed_id); - gtk_signal_disconnect (GTK_OBJECT (reflow->model), - reflow->model_items_inserted_id); - gtk_signal_disconnect (GTK_OBJECT (reflow->model), - reflow->model_item_changed_id); - gtk_object_unref (GTK_OBJECT (reflow->model)); - - reflow->model_changed_id = 0; - reflow->model_items_inserted_id = 0; - reflow->model_item_changed_id = 0; - reflow->model = NULL; -} - -static void -disconnect_selection (EReflow *reflow) -{ - if (reflow->selection == NULL) - return; - - gtk_signal_disconnect (GTK_OBJECT (reflow->selection), - reflow->selection_changed_id); - gtk_signal_disconnect (GTK_OBJECT (reflow->selection), - reflow->selection_row_changed_id); - gtk_signal_disconnect (GTK_OBJECT (reflow->selection), - reflow->cursor_changed_id); - gtk_object_unref (GTK_OBJECT (reflow->selection)); - - reflow->selection_changed_id = 0; - reflow->selection_row_changed_id = 0; - reflow->cursor_changed_id = 0; - reflow->selection = NULL; -} - -static void -connect_model (EReflow *reflow, EReflowModel *model) -{ - if (reflow->model != NULL) - disconnect_model (reflow); - - if (model == NULL) - return; - - reflow->model = model; - gtk_object_ref (GTK_OBJECT (reflow->model)); - reflow->model_changed_id = - gtk_signal_connect (GTK_OBJECT (reflow->model), "model_changed", - GTK_SIGNAL_FUNC (model_changed), reflow); - reflow->model_items_inserted_id = - gtk_signal_connect (GTK_OBJECT (reflow->model), "model_items_inserted", - GTK_SIGNAL_FUNC (items_inserted), reflow); - reflow->model_item_changed_id = - gtk_signal_connect (GTK_OBJECT (reflow->model), "model_item_changed", - GTK_SIGNAL_FUNC (item_changed), reflow); - model_changed (model, reflow); -} - -static void -adjustment_changed (GtkAdjustment *adjustment, EReflow *reflow) -{ - incarnate (reflow); -} - -static void -disconnect_adjustment (EReflow *reflow) -{ - if (reflow->adjustment == NULL) - return; - - gtk_signal_disconnect (GTK_OBJECT (reflow->adjustment), - reflow->adjustment_changed_id); - gtk_signal_disconnect (GTK_OBJECT (reflow->adjustment), - reflow->adjustment_value_changed_id); - - gtk_object_unref (GTK_OBJECT (reflow->adjustment)); - - reflow->adjustment_changed_id = 0; - reflow->adjustment_value_changed_id = 0; - reflow->adjustment = NULL; -} - -static void -connect_adjustment (EReflow *reflow, GtkAdjustment *adjustment) -{ - if (reflow->adjustment != NULL) - disconnect_adjustment (reflow); - - if (adjustment == NULL) - return; - - reflow->adjustment = adjustment; - reflow->adjustment_changed_id = - gtk_signal_connect (GTK_OBJECT (adjustment), "changed", - adjustment_changed, reflow); - reflow->adjustment_value_changed_id = - gtk_signal_connect (GTK_OBJECT (adjustment), "value_changed", - adjustment_changed, reflow); - gtk_object_ref (GTK_OBJECT (adjustment)); -} - -#if 0 -static void -set_scroll_adjustments (GtkLayout *layout, GtkAdjustment *hadj, GtkAdjustment *vadj, EReflow *reflow) -{ - connect_adjustment (reflow, hadj); -} - -static void -connect_set_adjustment (EReflow *reflow) -{ - reflow->set_scroll_adjustments_id = - gtk_signal_connect (GTK_OBJECT (GNOME_CANVAS_ITEM (reflow)->canvas), - "set_scroll_adjustments", - GTK_SIGNAL_FUNC (set_scroll_adjustments), reflow); -} -#endif - -static void -disconnect_set_adjustment (EReflow *reflow) -{ - if (reflow->set_scroll_adjustments_id != 0) { - gtk_signal_disconnect (GTK_OBJECT (GNOME_CANVAS_ITEM (reflow)->canvas), - reflow->set_scroll_adjustments_id); - reflow->set_scroll_adjustments_id = 0; - } -} - -static void -column_width_changed (EReflow *reflow) -{ - gtk_signal_emit (GTK_OBJECT (reflow), signals[COLUMN_WIDTH_CHANGED], reflow->column_width); -} - - - - -/* Virtual functions */ -static void -e_reflow_set_arg (GtkObject *o, GtkArg *arg, guint arg_id) -{ - GnomeCanvasItem *item; - EReflow *reflow; - - item = GNOME_CANVAS_ITEM (o); - reflow = E_REFLOW (o); - - switch (arg_id){ - case ARG_HEIGHT: - reflow->height = GTK_VALUE_DOUBLE (*arg); - reflow->need_reflow_columns = TRUE; - e_canvas_item_request_reflow(item); - break; - case ARG_MINIMUM_WIDTH: - reflow->minimum_width = GTK_VALUE_DOUBLE (*arg); - if (GNOME_CANVAS_ITEM_REALIZED & GTK_OBJECT_FLAGS(o)) - set_empty(reflow); - e_canvas_item_request_reflow(item); - break; - case ARG_EMPTY_MESSAGE: - g_free(reflow->empty_message); - reflow->empty_message = g_strdup(GTK_VALUE_STRING (*arg)); - if (GNOME_CANVAS_ITEM_REALIZED & GTK_OBJECT_FLAGS(o)) - set_empty(reflow); - break; - case ARG_MODEL: - connect_model (reflow, (EReflowModel *) GTK_VALUE_OBJECT (*arg)); - break; - case ARG_COLUMN_WIDTH: - if (reflow->column_width != GTK_VALUE_INT (*arg)) { - GtkAdjustment *adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas)); - double old_width = reflow->column_width; - - reflow->column_width = GTK_VALUE_INT (*arg); - adjustment->step_increment = (reflow->column_width + E_REFLOW_FULL_GUTTER) / 2; - adjustment->page_increment = adjustment->page_size - adjustment->step_increment; - gtk_adjustment_changed(adjustment); - e_reflow_resize_children(item); - e_canvas_item_request_reflow(item); - - reflow->need_column_resize = TRUE; - gnome_canvas_item_request_update(item); - - if (old_width != reflow->column_width) - column_width_changed (reflow); - } - break; - } -} - -static void -e_reflow_get_arg (GtkObject *object, GtkArg *arg, guint arg_id) -{ - EReflow *reflow; - - reflow = E_REFLOW (object); - - switch (arg_id) { - case ARG_MINIMUM_WIDTH: - GTK_VALUE_DOUBLE (*arg) = reflow->minimum_width; - break; - case ARG_WIDTH: - GTK_VALUE_DOUBLE (*arg) = reflow->width; - break; - case ARG_HEIGHT: - GTK_VALUE_DOUBLE (*arg) = reflow->height; - break; - case ARG_EMPTY_MESSAGE: - GTK_VALUE_STRING (*arg) = g_strdup(reflow->empty_message); - break; - case ARG_MODEL: - GTK_VALUE_OBJECT (*arg) = (GtkObject *) reflow->model; - break; - case ARG_COLUMN_WIDTH: - GTK_VALUE_INT (*arg) = reflow->column_width; - break; - default: - arg->type = GTK_TYPE_INVALID; - break; - } -} - -static void -e_reflow_destroy (GtkObject *object) -{ - EReflow *reflow = E_REFLOW(object); - - g_free (reflow->items); - g_free (reflow->heights); - g_free (reflow->columns); - - reflow->items = NULL; - reflow->heights = NULL; - reflow->columns = NULL; - reflow->count = 0; - reflow->allocated_count = 0; - - if (reflow->incarnate_idle_id != 0) - g_source_remove (reflow->incarnate_idle_id); - - disconnect_model (reflow); - disconnect_selection (reflow); - - g_free(reflow->empty_message); - - GTK_OBJECT_CLASS(parent_class)->destroy (object); -} - -static void -e_reflow_realize (GnomeCanvasItem *item) -{ - EReflow *reflow; - GnomeCanvasGroup *group; - GtkAdjustment *adjustment; - int count; - int i; - - reflow = E_REFLOW (item); - group = GNOME_CANVAS_GROUP (item); - - if (GNOME_CANVAS_ITEM_CLASS(parent_class)->realize) - (* GNOME_CANVAS_ITEM_CLASS(parent_class)->realize) (item); - - reflow->arrow_cursor = gdk_cursor_new (GDK_SB_H_DOUBLE_ARROW); - reflow->default_cursor = gdk_cursor_new (GDK_LEFT_PTR); - - count = reflow->count; - for(i = 0; i < count; i++) { - if (reflow->items[i]) - gnome_canvas_item_set(reflow->items[i], - "width", (double) reflow->column_width, - NULL); - } - - set_empty(reflow); - - reflow->need_reflow_columns = TRUE; - e_canvas_item_request_reflow(item); - - adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas)); - -#if 0 - connect_set_adjustment (reflow); -#endif - connect_adjustment (reflow, adjustment); - - adjustment->step_increment = (reflow->column_width + E_REFLOW_FULL_GUTTER) / 2; - adjustment->page_increment = adjustment->page_size - adjustment->step_increment; - gtk_adjustment_changed(adjustment); - - if (!item->canvas->aa) { - } -} - -static void -e_reflow_unrealize (GnomeCanvasItem *item) -{ - EReflow *reflow; - - reflow = E_REFLOW (item); - - if (!item->canvas->aa) { - } - - gdk_cursor_destroy (reflow->arrow_cursor); - gdk_cursor_destroy (reflow->default_cursor); - reflow->arrow_cursor = NULL; - reflow->default_cursor = NULL; - - g_free (reflow->columns); - reflow->columns = NULL; - - disconnect_set_adjustment (reflow); - disconnect_adjustment (reflow); - - if (GNOME_CANVAS_ITEM_CLASS(parent_class)->unrealize) - (* GNOME_CANVAS_ITEM_CLASS(parent_class)->unrealize) (item); -} - -static gboolean -e_reflow_event (GnomeCanvasItem *item, GdkEvent *event) -{ - EReflow *reflow; - int return_val = FALSE; - - reflow = E_REFLOW (item); - - switch( event->type ) - { - case GDK_KEY_PRESS: - return_val = e_selection_model_key_press(reflow->selection, (GdkEventKey *) event); - break; -#if 0 - if (event->key.keyval == GDK_Tab || - event->key.keyval == GDK_KP_Tab || - event->key.keyval == GDK_ISO_Left_Tab) { - int i; - int count; - count = reflow->count; - for (i = 0; i < count; i++) { - int unsorted = e_sorter_sorted_to_model (E_SORTER (reflow->sorter), i); - GnomeCanvasItem *item = reflow->items[unsorted]; - EFocus has_focus; - if (item) { - gtk_object_get(GTK_OBJECT(item), - "has_focus", &has_focus, - NULL); - if (has_focus) { - if (event->key.state & GDK_SHIFT_MASK) { - if (i == 0) - return 0; - i--; - } else { - if (i == count - 1) - return 0; - i++; - } - - unsorted = e_sorter_sorted_to_model (E_SORTER (reflow->sorter), i); - if (reflow->items[unsorted] == NULL) { - reflow->items[unsorted] = e_reflow_model_incarnate (reflow->model, unsorted, GNOME_CANVAS_GROUP (reflow)); - } - - item = reflow->items[unsorted]; - gnome_canvas_item_set(item, - "has_focus", (event->key.state & GDK_SHIFT_MASK) ? E_FOCUS_END : E_FOCUS_START, - NULL); - return 1; - } - } - } - } -#endif - break; - case GDK_BUTTON_PRESS: - switch(event->button.button) - { - case 1: - { - GdkEventButton *button = (GdkEventButton *) event; - double n_x, max_x; - n_x = button->x; - n_x += E_REFLOW_BORDER_WIDTH + E_REFLOW_DIVIDER_WIDTH; - n_x = fmod(n_x,(reflow->column_width + E_REFLOW_FULL_GUTTER)); - - max_x = E_REFLOW_BORDER_WIDTH; - max_x += (reflow->column_width + E_REFLOW_FULL_GUTTER) * reflow->column_count; - if ( button->y >= E_REFLOW_BORDER_WIDTH && button->y <= reflow->height - E_REFLOW_BORDER_WIDTH && n_x < E_REFLOW_FULL_GUTTER && max_x > button->x ) { - reflow->which_column_dragged = e_reflow_pick_line(reflow, button->x); - reflow->start_x = reflow->which_column_dragged * (reflow->column_width + E_REFLOW_FULL_GUTTER) - E_REFLOW_DIVIDER_WIDTH / 2; - reflow->temp_column_width = reflow->column_width; - reflow->column_drag = TRUE; - - gnome_canvas_item_grab (item, - GDK_BUTTON_RELEASE_MASK | GDK_POINTER_MOTION_MASK, - reflow->arrow_cursor, - button->time); - - reflow->previous_temp_column_width = -1; - reflow->need_column_resize = TRUE; - gnome_canvas_item_request_update(item); - return TRUE; - } - } - break; - case 4: - { - GtkAdjustment *adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas)); - gdouble new_value = adjustment->value; - new_value -= adjustment->step_increment; - gtk_adjustment_set_value(adjustment, new_value); - } - break; - case 5: - { - GtkAdjustment *adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas)); - gdouble new_value = adjustment->value; - new_value += adjustment->step_increment; - if ( new_value > adjustment->upper - adjustment->page_size ) - new_value = adjustment->upper - adjustment->page_size; - gtk_adjustment_set_value(adjustment, new_value); - } - break; - } - break; - case GDK_BUTTON_RELEASE: - if (reflow->column_drag) { - gdouble old_width = reflow->column_width; - GdkEventButton *button = (GdkEventButton *) event; - GtkAdjustment *adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas)); - reflow->temp_column_width = reflow->column_width + - (button->x - reflow->start_x)/(reflow->which_column_dragged - e_reflow_pick_line(reflow, adjustment->value)); - if ( reflow->temp_column_width < 50 ) - reflow->temp_column_width = 50; - reflow->column_drag = FALSE; - if ( old_width != reflow->temp_column_width ) { - gtk_adjustment_set_value(adjustment, adjustment->value + e_reflow_pick_line(reflow, adjustment->value) * (reflow->temp_column_width - reflow->column_width)); - reflow->column_width = reflow->temp_column_width; - adjustment->step_increment = (reflow->column_width + E_REFLOW_FULL_GUTTER) / 2; - adjustment->page_increment = adjustment->page_size - adjustment->step_increment; - gtk_adjustment_changed(adjustment); - e_reflow_resize_children(item); - e_canvas_item_request_reflow(item); - column_width_changed (reflow); - } - reflow->need_column_resize = TRUE; - gnome_canvas_item_request_update(item); - gnome_canvas_item_ungrab (item, button->time); - return TRUE; - } - break; - case GDK_MOTION_NOTIFY: - if (reflow->column_drag) { - double old_width = reflow->temp_column_width; - GdkEventMotion *motion = (GdkEventMotion *) event; - GtkAdjustment *adjustment = gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas)); - reflow->temp_column_width = reflow->column_width + - (motion->x - reflow->start_x)/(reflow->which_column_dragged - e_reflow_pick_line(reflow, adjustment->value)); - if (reflow->temp_column_width < 50) - reflow->temp_column_width = 50; - if (old_width != reflow->temp_column_width) { - reflow->need_column_resize = TRUE; - gnome_canvas_item_request_update(item); - } - return TRUE; - } else { - GdkEventMotion *motion = (GdkEventMotion *) event; - double n_x, max_x; - - n_x = motion->x; - n_x += E_REFLOW_BORDER_WIDTH + E_REFLOW_DIVIDER_WIDTH; - n_x = fmod(n_x,(reflow->column_width + E_REFLOW_FULL_GUTTER)); - - max_x = E_REFLOW_BORDER_WIDTH; - max_x += (reflow->column_width + E_REFLOW_FULL_GUTTER) * reflow->column_count; - - if ( motion->y >= E_REFLOW_BORDER_WIDTH && motion->y <= reflow->height - E_REFLOW_BORDER_WIDTH && n_x < E_REFLOW_FULL_GUTTER && max_x > motion->x) { - if ( reflow->default_cursor_shown ) { - gdk_window_set_cursor(GTK_WIDGET(item->canvas)->window, reflow->arrow_cursor); - reflow->default_cursor_shown = FALSE; - } - } else - if ( ! reflow->default_cursor_shown ) { - gdk_window_set_cursor(GTK_WIDGET(item->canvas)->window, reflow->default_cursor); - reflow->default_cursor_shown = TRUE; - } - - } - break; - case GDK_ENTER_NOTIFY: - if (!reflow->column_drag) { - GdkEventCrossing *crossing = (GdkEventCrossing *) event; - double n_x, max_x; - n_x = crossing->x; - n_x += E_REFLOW_BORDER_WIDTH + E_REFLOW_DIVIDER_WIDTH; - n_x = fmod(n_x,(reflow->column_width + E_REFLOW_FULL_GUTTER)); - - max_x = E_REFLOW_BORDER_WIDTH; - max_x += (reflow->column_width + E_REFLOW_FULL_GUTTER) * reflow->column_count; - if ( crossing->y >= E_REFLOW_BORDER_WIDTH && crossing->y <= reflow->height - E_REFLOW_BORDER_WIDTH && n_x < E_REFLOW_FULL_GUTTER && max_x > crossing->x) { - if ( reflow->default_cursor_shown ) { - gdk_window_set_cursor(GTK_WIDGET(item->canvas)->window, reflow->arrow_cursor); - reflow->default_cursor_shown = FALSE; - } - } - } - break; - case GDK_LEAVE_NOTIFY: - if (!reflow->column_drag) { - GdkEventCrossing *crossing = (GdkEventCrossing *) event; - double n_x; - n_x = crossing->x; - n_x += E_REFLOW_BORDER_WIDTH + E_REFLOW_DIVIDER_WIDTH; - n_x = fmod(n_x,(reflow->column_width + E_REFLOW_FULL_GUTTER)); - if ( !( crossing->y >= E_REFLOW_BORDER_WIDTH && crossing->y <= reflow->height - E_REFLOW_BORDER_WIDTH && n_x < E_REFLOW_FULL_GUTTER ) ) { - if ( ! reflow->default_cursor_shown ) { - gdk_window_set_cursor(GTK_WIDGET(item->canvas)->window, reflow->default_cursor); - reflow->default_cursor_shown = TRUE; - } - } - } - break; - default: - break; - } - if (return_val) - return return_val; - else if (GNOME_CANVAS_ITEM_CLASS( parent_class )->event) - return (* GNOME_CANVAS_ITEM_CLASS( parent_class )->event) (item, event); - else - return FALSE; -} - -static void e_reflow_draw (GnomeCanvasItem *item, GdkDrawable *drawable, - int x, int y, int width, int height) -{ - int x_rect, y_rect, width_rect, height_rect; - gdouble running_width; - EReflow *reflow = E_REFLOW(item); - int i; - double column_width; - - if (GNOME_CANVAS_ITEM_CLASS(parent_class)->draw) - GNOME_CANVAS_ITEM_CLASS(parent_class)->draw (item, drawable, x, y, width, height); - column_width = reflow->column_width; - running_width = E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - x_rect = running_width; - y_rect = E_REFLOW_BORDER_WIDTH; - width_rect = E_REFLOW_DIVIDER_WIDTH; - height_rect = reflow->height - (E_REFLOW_BORDER_WIDTH * 2); - - /* Compute first column to draw. */ - i = x; - i /= column_width + E_REFLOW_FULL_GUTTER; - running_width += i * (column_width + E_REFLOW_FULL_GUTTER); - - for ( ; i < reflow->column_count; i++) { - if ( running_width > x + width ) - break; - x_rect = running_width; - gtk_paint_flat_box(GTK_WIDGET(item->canvas)->style, - drawable, - GTK_STATE_ACTIVE, - GTK_SHADOW_NONE, - NULL, - GTK_WIDGET(item->canvas), - "reflow", - x_rect - x, - y_rect - y, - width_rect, - height_rect); - running_width += E_REFLOW_DIVIDER_WIDTH + E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - } - if (reflow->column_drag) { - int start_line = e_reflow_pick_line(reflow, - gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas))->value); - i = x - start_line * (column_width + E_REFLOW_FULL_GUTTER); - running_width = start_line * (column_width + E_REFLOW_FULL_GUTTER); - column_width = reflow->temp_column_width; - running_width -= start_line * (column_width + E_REFLOW_FULL_GUTTER); - i += start_line * (column_width + E_REFLOW_FULL_GUTTER); - running_width += E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - x_rect = running_width; - y_rect = E_REFLOW_BORDER_WIDTH; - width_rect = E_REFLOW_DIVIDER_WIDTH; - height_rect = reflow->height - (E_REFLOW_BORDER_WIDTH * 2); - - /* Compute first column to draw. */ - i /= column_width + E_REFLOW_FULL_GUTTER; - running_width += i * (column_width + E_REFLOW_FULL_GUTTER); - - for ( ; i < reflow->column_count; i++) { - if ( running_width > x + width ) - break; - x_rect = running_width; - gdk_draw_rectangle(drawable, - GTK_WIDGET(item->canvas)->style->fg_gc[GTK_STATE_NORMAL], - TRUE, - x_rect - x, - y_rect - y, - width_rect - 1, - height_rect - 1); - running_width += E_REFLOW_DIVIDER_WIDTH + E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - } - } -} - -static void -e_reflow_update (GnomeCanvasItem *item, double affine[6], ArtSVP *clip_path, gint flags) -{ - EReflow *reflow; - double x0, x1, y0, y1; - - reflow = E_REFLOW (item); - - if (GNOME_CANVAS_ITEM_CLASS(parent_class)->update) - GNOME_CANVAS_ITEM_CLASS(parent_class)->update (item, affine, clip_path, flags); - - x0 = item->x1; - y0 = item->y1; - x1 = item->x2; - y1 = item->y2; - if ( x1 < x0 + reflow->width ) - x1 = x0 + reflow->width; - if ( y1 < y0 + reflow->height ) - y1 = y0 + reflow->height; - item->x2 = x1; - item->y2 = y1; - - if (reflow->need_height_update) { - x0 = item->x1; - y0 = item->y1; - x1 = item->x2; - y1 = item->y2; - if ( x0 > 0 ) - x0 = 0; - if ( y0 > 0 ) - y0 = 0; - if ( x1 < E_REFLOW(item)->width ) - x1 = E_REFLOW(item)->width; - if ( x1 < E_REFLOW(item)->height ) - x1 = E_REFLOW(item)->height; - - gnome_canvas_request_redraw(item->canvas, x0, y0, x1, y1); - reflow->need_height_update = FALSE; - } else if (reflow->need_column_resize) { - int x_rect, y_rect, width_rect, height_rect; - int start_line = e_reflow_pick_line(reflow, - gtk_layout_get_hadjustment(GTK_LAYOUT(item->canvas))->value); - gdouble running_width; - int i; - double column_width; - - if ( reflow->previous_temp_column_width != -1 ) { - running_width = start_line * (reflow->column_width + E_REFLOW_FULL_GUTTER); - column_width = reflow->previous_temp_column_width; - running_width -= start_line * (column_width + E_REFLOW_FULL_GUTTER); - running_width += E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - y_rect = E_REFLOW_BORDER_WIDTH; - width_rect = E_REFLOW_DIVIDER_WIDTH; - height_rect = reflow->height - (E_REFLOW_BORDER_WIDTH * 2); - - for ( i = 0; i < reflow->column_count; i++) { - x_rect = running_width; - gnome_canvas_request_redraw(item->canvas, x_rect, y_rect, x_rect + width_rect, y_rect + height_rect); - running_width += E_REFLOW_DIVIDER_WIDTH + E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - } - } - - if ( reflow->temp_column_width != -1 ) { - running_width = start_line * (reflow->column_width + E_REFLOW_FULL_GUTTER); - column_width = reflow->temp_column_width; - running_width -= start_line * (column_width + E_REFLOW_FULL_GUTTER); - running_width += E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - y_rect = E_REFLOW_BORDER_WIDTH; - width_rect = E_REFLOW_DIVIDER_WIDTH; - height_rect = reflow->height - (E_REFLOW_BORDER_WIDTH * 2); - - for ( i = 0; i < reflow->column_count; i++) { - x_rect = running_width; - gnome_canvas_request_redraw(item->canvas, x_rect, y_rect, x_rect + width_rect, y_rect + height_rect); - running_width += E_REFLOW_DIVIDER_WIDTH + E_REFLOW_BORDER_WIDTH + column_width + E_REFLOW_BORDER_WIDTH; - } - } - - reflow->previous_temp_column_width = reflow->temp_column_width; - reflow->need_column_resize = FALSE; - } -} - -static double -e_reflow_point (GnomeCanvasItem *item, - double x, double y, int cx, int cy, - GnomeCanvasItem **actual_item) -{ - double distance = 1; - - *actual_item = NULL; - - if (GNOME_CANVAS_ITEM_CLASS(parent_class)->point) - distance = GNOME_CANVAS_ITEM_CLASS(parent_class)->point (item, x, y, cx, cy, actual_item); - if ((int) (distance * item->canvas->pixels_per_unit + 0.5) <= item->canvas->close_enough && *actual_item) - return distance; - - *actual_item = item; - return 0; -#if 0 - if (y >= E_REFLOW_BORDER_WIDTH && y <= reflow->height - E_REFLOW_BORDER_WIDTH) { - float n_x; - n_x = x; - n_x += E_REFLOW_BORDER_WIDTH + E_REFLOW_DIVIDER_WIDTH; - n_x = fmod(n_x, (reflow->column_width + E_REFLOW_FULL_GUTTER)); - if (n_x < E_REFLOW_FULL_GUTTER) { - *actual_item = item; - return 0; - } - } - return distance; -#endif -} - -static void -e_reflow_reflow( GnomeCanvasItem *item, int flags ) -{ - EReflow *reflow = E_REFLOW(item); - gdouble old_width; - gdouble running_width; - gdouble running_height; - int next_column; - int i; - - if (! (GTK_OBJECT_FLAGS (reflow) & GNOME_CANVAS_ITEM_REALIZED)) - return; - - if (reflow->need_reflow_columns) { - reflow_columns (reflow); - } - - old_width = reflow->width; - - running_width = E_REFLOW_BORDER_WIDTH; - running_height = E_REFLOW_BORDER_WIDTH; - - next_column = 1; - - for (i = 0; i < reflow->count; i++) { - int unsorted = e_sorter_sorted_to_model (E_SORTER (reflow->sorter), i); - if (next_column < reflow->column_count && i == reflow->columns[next_column]) { - running_height = E_REFLOW_BORDER_WIDTH; - running_width += reflow->column_width + E_REFLOW_FULL_GUTTER; - next_column ++; - } - - if (unsorted >= 0 && reflow->items[unsorted]) { - e_canvas_item_move_absolute(GNOME_CANVAS_ITEM(reflow->items[unsorted]), - (double) running_width, - (double) running_height); - running_height += reflow->heights[unsorted] + E_REFLOW_BORDER_WIDTH; - } - } - reflow->width = running_width + reflow->column_width + E_REFLOW_BORDER_WIDTH; - if ( reflow->width < reflow->minimum_width ) - reflow->width = reflow->minimum_width; - if (old_width != reflow->width) - e_canvas_item_request_parent_reflow(item); -} - -static int -e_reflow_selection_event_real (EReflow *reflow, GnomeCanvasItem *item, GdkEvent *event) -{ - int row; - int return_val = TRUE; - switch (event->type) { - case GDK_BUTTON_PRESS: - switch (event->button.button) { - case 1: /* Fall through. */ - case 2: - row = er_find_item (reflow, item); - e_selection_model_do_something(reflow->selection, row, 0, event->button.state); - break; - case 3: - row = er_find_item (reflow, item); - e_selection_model_right_click_down(reflow->selection, row, 0, 0); - break; - default: - return_val = FALSE; - break; - } - break; - case GDK_KEY_PRESS: - return_val = e_selection_model_key_press(reflow->selection, (GdkEventKey *) event); - break; - default: - return_val = FALSE; - break; - } - - return return_val; -} - -static void -e_reflow_class_init (EReflowClass *klass) -{ - GtkObjectClass *object_class; - GnomeCanvasItemClass *item_class; - - object_class = (GtkObjectClass*) klass; - item_class = (GnomeCanvasItemClass *) klass; - - parent_class = gtk_type_class (gnome_canvas_group_get_type ()); - - gtk_object_add_arg_type ("EReflow::minimum_width", GTK_TYPE_DOUBLE, - GTK_ARG_READWRITE, ARG_MINIMUM_WIDTH); - gtk_object_add_arg_type ("EReflow::width", GTK_TYPE_DOUBLE, - GTK_ARG_READABLE, ARG_WIDTH); - gtk_object_add_arg_type ("EReflow::height", GTK_TYPE_DOUBLE, - GTK_ARG_READWRITE, ARG_HEIGHT); - gtk_object_add_arg_type ("EReflow::empty_message", GTK_TYPE_STRING, - GTK_ARG_READWRITE, ARG_EMPTY_MESSAGE); - gtk_object_add_arg_type ("EReflow::model", E_REFLOW_MODEL_TYPE, - GTK_ARG_READWRITE, ARG_MODEL); - gtk_object_add_arg_type ("EReflow::column_width", GTK_TYPE_INT, - GTK_ARG_READWRITE, ARG_COLUMN_WIDTH); - - signals [SELECTION_EVENT] = - gtk_signal_new ("selection_event", - GTK_RUN_LAST, - E_OBJECT_CLASS_TYPE (object_class), - GTK_SIGNAL_OFFSET (EReflowClass, selection_event), - e_marshal_INT__OBJECT_POINTER, - GTK_TYPE_INT, 2, GTK_TYPE_OBJECT, GTK_TYPE_GDK_EVENT); - - signals [COLUMN_WIDTH_CHANGED] = - gtk_signal_new ("column_width_changed", - GTK_RUN_LAST, - E_OBJECT_CLASS_TYPE (object_class), - GTK_SIGNAL_OFFSET (EReflowClass, column_width_changed), - e_marshal_NONE__DOUBLE, - GTK_TYPE_NONE, 1, GTK_TYPE_DOUBLE); - - E_OBJECT_CLASS_ADD_SIGNALS (object_class, signals, LAST_SIGNAL); - - object_class->set_arg = e_reflow_set_arg; - object_class->get_arg = e_reflow_get_arg; - object_class->destroy = e_reflow_destroy; - - /* GnomeCanvasItem method overrides */ - item_class->event = e_reflow_event; - item_class->realize = e_reflow_realize; - item_class->unrealize = e_reflow_unrealize; - item_class->draw = e_reflow_draw; - item_class->update = e_reflow_update; - item_class->point = e_reflow_point; - - klass->selection_event = e_reflow_selection_event_real; - klass->column_width_changed = NULL; -} - -static void -e_reflow_init (EReflow *reflow) -{ - reflow->model = NULL; - reflow->items = NULL; - reflow->heights = NULL; - reflow->count = 0; - - reflow->columns = NULL; - reflow->column_count = 0; - - reflow->empty_text = NULL; - reflow->empty_message = NULL; - - reflow->minimum_width = 10; - reflow->width = 10; - reflow->height = 10; - - reflow->column_width = 150; - - reflow->column_drag = FALSE; - - reflow->need_height_update = FALSE; - reflow->need_column_resize = FALSE; - - reflow->default_cursor_shown = TRUE; - reflow->arrow_cursor = NULL; - reflow->default_cursor = NULL; - - reflow->cursor_row = -1; - - reflow->incarnate_idle_id = 0; - reflow->set_scroll_adjustments_id = 0; - - reflow->selection = E_SELECTION_MODEL (e_selection_model_simple_new()); - reflow->sorter = e_sorter_array_new (er_compare, reflow); - - gtk_object_set (GTK_OBJECT (reflow->selection), - "sorter", reflow->sorter, - NULL); - - reflow->selection_changed_id = - gtk_signal_connect(GTK_OBJECT(reflow->selection), "selection_changed", - GTK_SIGNAL_FUNC(selection_changed), reflow); - reflow->selection_row_changed_id = - gtk_signal_connect(GTK_OBJECT(reflow->selection), "selection_row_changed", - GTK_SIGNAL_FUNC(selection_row_changed), reflow); - reflow->cursor_changed_id = - gtk_signal_connect(GTK_OBJECT(reflow->selection), "cursor_changed", - GTK_SIGNAL_FUNC(cursor_changed), reflow); - - e_canvas_item_set_reflow_callback(GNOME_CANVAS_ITEM(reflow), e_reflow_reflow); -} - -GtkType -e_reflow_get_type (void) -{ - static GtkType type = 0; - - if (!type) { - static const GtkTypeInfo info = { - "EReflow", - sizeof (EReflow), - sizeof (EReflowClass), - (GtkClassInitFunc) e_reflow_class_init, - (GtkObjectInitFunc) e_reflow_init, - /* reserved_1 */ NULL, - /* reserved_2 */ NULL, - (GtkClassInitFunc) NULL, - }; - - type = gtk_type_unique (gnome_canvas_group_get_type (), &info); - } - - return type; -} |