diff options
Diffstat (limited to 'gtk/treeview.c')
-rw-r--r-- | gtk/treeview.c | 556 |
1 files changed, 556 insertions, 0 deletions
diff --git a/gtk/treeview.c b/gtk/treeview.c new file mode 100644 index 000000000..a84a502c6 --- /dev/null +++ b/gtk/treeview.c @@ -0,0 +1,556 @@ +/* + * Copyright 2004 Richard Wilson <not_ginger_matt@users.sourceforge.net> + * Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net> + * + * This file is part of NetSurf, http://www.netsurf-browser.org/ + * + * NetSurf 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; version 2 of the License. + * + * NetSurf 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 <http://www.gnu.org/licenses/>. + */ + +/** \file + * Generic tree handling (implementation). + */ + +#include <assert.h> +#include <gdk/gdkkeysyms.h> +#include <gtk/gtk.h> +#include <stdio.h> +#include <limits.h> + +#include "desktop/tree.h" +#include "desktop/tree_url_node.h" +#include "desktop/plotters.h" +#include "gtk/gui.h" +#include "gtk/plotters.h" +#include "gtk/treeview.h" +#include "utils/log.h" +#include "utils/utils.h" + +struct nsgtk_treeview { + GtkWindow *window; + GtkScrolledWindow *scrolled; + GtkDrawingArea *drawing_area; + int mouse_pressed_x; + int mouse_pressed_y; + int last_x, last_y; + browser_mouse_state mouse_state; + struct tree *tree; +}; + +const char tree_directory_icon_name[] = "directory.png"; +const char tree_content_icon_name[] = "content.png"; + +void nsgtk_treeview_destroy(struct nsgtk_treeview *tv) +{ + tree_delete(tv->tree); + gtk_widget_destroy(GTK_WIDGET(tv->window)); + free(tv); +} + +struct tree *nsgtk_treeview_get_tree(struct nsgtk_treeview *tv) +{ + return tv->tree; +} + +static void nsgtk_tree_redraw_request(int x, int y, int width, int height, void *data) +{ + struct nsgtk_treeview *tw = data; + + gtk_widget_queue_draw_area(GTK_WIDGET(tw->drawing_area), + x, y, width, height); +} + + +/** + * Updates the tree owner following a tree resize + * + * \param tree the tree to update the owner of + */ +static void nsgtk_tree_resized(struct tree *tree, int width, int height, void *data) +{ + struct nsgtk_treeview *tw = data; + + gtk_widget_set_size_request(GTK_WIDGET(tw->drawing_area), + width, height); + return; +} + +/** + * Translates a content_type to the name of a respective icon + * + * \param content_type content type + * \param buffer buffer for the icon name + */ +void tree_icon_name_from_content_type(char *buffer, content_type type) +{ + // TODO: design/acquire icons + switch (type) { + case CONTENT_HTML: + case CONTENT_TEXTPLAIN: + case CONTENT_CSS: +#if defined(WITH_MNG) || defined(WITH_PNG) + case CONTENT_PNG: +#endif +#ifdef WITH_MNG + case CONTENT_JNG: + case CONTENT_MNG: +#endif +#ifdef WITH_JPEG + case CONTENT_JPEG: +#endif +#ifdef WITH_GIF + case CONTENT_GIF: +#endif +#ifdef WITH_BMP + case CONTENT_BMP: + case CONTENT_ICO: +#endif +#ifdef WITH_SPRITE + case CONTENT_SPRITE: +#endif +#ifdef WITH_DRAW + case CONTENT_DRAW: +#endif +#ifdef WITH_ARTWORKS + case CONTENT_ARTWORKS: +#endif +#ifdef WITH_NS_SVG + case CONTENT_SVG: +#endif + default: + sprintf(buffer, tree_content_icon_name); + break; + } +} + +/** + * Scrolls the tree to make an element visible + * + * \param y Y coordinate of the element + * \param height height of the element + * \param data user data assigned to the tree on tree creation + */ +static void nsgtk_tree_scroll_visible(int y, int height, void *data) +{ + int y0, y1; + gdouble page; + struct nsgtk_treeview *tw = data; + GtkAdjustment *vadj = gtk_scrolled_window_get_vadjustment(tw->scrolled); + + assert(vadj); + + g_object_get(vadj, "page-size", &page, NULL); + + y0 = (int)(gtk_adjustment_get_value(vadj)); + y1 = y0 + page; + + if ((y >= y0) && (y + height <= y1)) + return; + if (y + height > y1) + y0 = y0 + (y + height - y1); + if (y < y0) + y0 = y; + gtk_adjustment_set_value(vadj, y0); +} + + +/** + * Retrieves the dimensions of the window with the tree + * + * \param data user data assigned to the tree on tree creation + * \param width will be updated to window width if not NULL + * \param height will be updated to window height if not NULL + */ +static void nsgtk_tree_get_window_dimensions(int *width, int *height, void *data) +{ + struct nsgtk_treeview *tw = data; + GtkAdjustment *vadj; + GtkAdjustment *hadj; + gdouble page; + + if (width != NULL) { + hadj = gtk_scrolled_window_get_hadjustment(tw->scrolled); + g_object_get(hadj, "page-size", &page, NULL); + *width = page; + } + + if (height != NULL) { + vadj = gtk_scrolled_window_get_vadjustment(tw->scrolled); + g_object_get(vadj, "page-size", &page, NULL); + *height = page; + } +} + +/* signal handler functions for a tree window */ +gboolean nsgtk_tree_window_expose_event(GtkWidget *widget, + GdkEventExpose *event, gpointer g) +{ + struct tree *tree = (struct tree *) g; + int x, y, width, height; + + x = event->area.x; + y = event->area.y; + width = event->area.width; + height = event->area.height; + + current_widget = widget; + current_drawable = widget->window; + current_gc = gdk_gc_new(current_drawable); +#ifdef CAIRO_VERSION + current_cr = gdk_cairo_create(current_drawable); +#endif + plot = nsgtk_plotters; + nsgtk_plot_set_scale(1.0);current_widget = widget; + current_drawable = widget->window; + current_gc = gdk_gc_new(current_drawable); +#ifdef CAIRO_VERSION + current_cr = gdk_cairo_create(current_drawable); +#endif + plot = nsgtk_plotters; + nsgtk_plot_set_scale(1.0); + + tree_set_redraw(tree, true); + tree_draw(tree, 0, 0, x, y, width, height); + + current_widget = NULL; + g_object_unref(current_gc); +#ifdef CAIRO_VERSION + cairo_destroy(current_cr); +#endif + + return FALSE; +} + +void nsgtk_tree_window_hide(GtkWidget *widget, gpointer g) +{ + struct nsgtk_treeview *tw = g; + struct tree *tree = tw->tree; + + if (tree != NULL) + tree_set_redraw(tree, false); +} + +gboolean nsgtk_tree_window_button_press_event(GtkWidget *widget, + GdkEventButton *event, gpointer g) +{ + struct nsgtk_treeview *tw = g; + struct tree *tree = tw->tree; + + gtk_widget_grab_focus(GTK_WIDGET(tw->drawing_area)); + + + tw->mouse_pressed_x = event->x; + tw->mouse_pressed_y = event->y; + + if (event->type == GDK_2BUTTON_PRESS) + tw->mouse_state = BROWSER_MOUSE_DOUBLE_CLICK; + + switch (event->button) { + case 1: tw->mouse_state |= BROWSER_MOUSE_PRESS_1; break; + case 3: tw->mouse_state |= BROWSER_MOUSE_PRESS_2; break; + } + /* Handle the modifiers too */ + if (event->state & GDK_SHIFT_MASK) + tw->mouse_state |= BROWSER_MOUSE_MOD_1; + if (event->state & GDK_CONTROL_MASK) + tw->mouse_state |= BROWSER_MOUSE_MOD_2; + if (event->state & GDK_MOD1_MASK) + tw->mouse_state |= BROWSER_MOUSE_MOD_3; + + /* Record where we pressed, for use when determining whether to start + * a drag in motion notify events. */ + tw->last_x = event->x; + tw->last_y = event->y; + + tree_mouse_action(tree, tw->mouse_state, event->x, event->y); + + return TRUE; +} + +gboolean nsgtk_tree_window_button_release_event(GtkWidget *widget, + GdkEventButton *event, gpointer g) +{ + bool shift = event->state & GDK_SHIFT_MASK; + bool ctrl = event->state & GDK_CONTROL_MASK; + bool alt = event->state & GDK_MOD1_MASK; + struct nsgtk_treeview *tw = (struct nsgtk_treeview *) g; + struct tree *tree = tw->tree; + + /* We consider only button 1 clicks as double clicks. + * If the mouse state is PRESS then we are waiting for a release to emit + * a click event, otherwise just reset the state to nothing*/ + if (tw->mouse_state & BROWSER_MOUSE_DOUBLE_CLICK) { + + if (tw->mouse_state & BROWSER_MOUSE_PRESS_1) + tw->mouse_state ^= BROWSER_MOUSE_PRESS_1 | + BROWSER_MOUSE_CLICK_1; + else if (tw->mouse_state & BROWSER_MOUSE_PRESS_2) + tw->mouse_state ^= (BROWSER_MOUSE_PRESS_2 | + BROWSER_MOUSE_CLICK_2 | + BROWSER_MOUSE_DOUBLE_CLICK); + + } else if (tw->mouse_state & BROWSER_MOUSE_PRESS_1) + tw->mouse_state ^= + (BROWSER_MOUSE_PRESS_1 | BROWSER_MOUSE_CLICK_1); + else if (tw->mouse_state & BROWSER_MOUSE_PRESS_2) + tw->mouse_state ^= (BROWSER_MOUSE_PRESS_2 | + BROWSER_MOUSE_CLICK_2); + + /* Handle modifiers being removed */ + if (tw->mouse_state & BROWSER_MOUSE_MOD_1 && !shift) + tw->mouse_state ^= BROWSER_MOUSE_MOD_1; + if (tw->mouse_state & BROWSER_MOUSE_MOD_2 && !ctrl) + tw->mouse_state ^= BROWSER_MOUSE_MOD_2; + if (tw->mouse_state & BROWSER_MOUSE_MOD_3 && !alt) + tw->mouse_state ^= BROWSER_MOUSE_MOD_3; + + + if (tw->mouse_state & + (BROWSER_MOUSE_CLICK_1 | BROWSER_MOUSE_CLICK_2 + | BROWSER_MOUSE_DOUBLE_CLICK)) + tree_mouse_action(tree, tw->mouse_state, + event->x, event->y); + else + tree_drag_end(tree, tw->mouse_state, + tw->mouse_pressed_x, + tw->mouse_pressed_y, + event->x, event->y); + + + tw->mouse_state = 0; + + + return TRUE; +} + +gboolean nsgtk_tree_window_motion_notify_event(GtkWidget *widget, + GdkEventButton *event, gpointer g) +{ + bool shift = event->state & GDK_SHIFT_MASK; + bool ctrl = event->state & GDK_CONTROL_MASK; + bool alt = event->state & GDK_MOD1_MASK; + struct nsgtk_treeview *tw = (struct nsgtk_treeview *) g; + struct tree *tree = tw->tree; + + if ((abs(event->x - tw->last_x) < 5) && + (abs(event->y - tw->last_y) < 5)) { + /* Mouse hasn't moved far enough from press coordinate for this + * to be considered a drag. */ + return FALSE; + } else { + /* This is a drag, ensure it's always treated as such, even if + * we drag back over the press location */ + tw->last_x = INT_MIN; + tw->last_y = INT_MIN; + } + + /* Handle modifiers being removed */ + if (tw->mouse_state & BROWSER_MOUSE_MOD_1 && !shift) + tw->mouse_state ^= BROWSER_MOUSE_MOD_1; + if (tw->mouse_state & BROWSER_MOUSE_MOD_2 && !ctrl) + tw->mouse_state ^= BROWSER_MOUSE_MOD_2; + if (tw->mouse_state & BROWSER_MOUSE_MOD_3 && !alt) + tw->mouse_state ^= BROWSER_MOUSE_MOD_3; + + if (tw->mouse_state & BROWSER_MOUSE_PRESS_1) { + /* Start button 1 drag */ + tree_mouse_action(tree, BROWSER_MOUSE_DRAG_1, + tw->mouse_pressed_x, tw->mouse_pressed_y); + /* Replace PRESS with HOLDING and declare drag in progress */ + tw->mouse_state ^= (BROWSER_MOUSE_PRESS_1 | + BROWSER_MOUSE_HOLDING_1); + tw->mouse_state |= BROWSER_MOUSE_DRAG_ON; + return TRUE; + } + else if (tw->mouse_state & BROWSER_MOUSE_PRESS_2){ + /* Start button 2s drag */ + tree_mouse_action(tree, BROWSER_MOUSE_DRAG_2, + tw->mouse_pressed_x, tw->mouse_pressed_y); + /* Replace PRESS with HOLDING and declare drag in progress */ + tw->mouse_state ^= (BROWSER_MOUSE_PRESS_2 | + BROWSER_MOUSE_HOLDING_2); + tw->mouse_state |= BROWSER_MOUSE_DRAG_ON; + return TRUE; + } + + if (tw->mouse_state & (BROWSER_MOUSE_HOLDING_1 | + BROWSER_MOUSE_HOLDING_2)) + tree_mouse_action(tree, tw->mouse_state, event->x, + event->y); + + return TRUE; +} + + +gboolean nsgtk_tree_window_keypress_event(GtkWidget *widget, GdkEventKey *event, + gpointer g) +{ + struct nsgtk_treeview *tw = (struct nsgtk_treeview *) g; + struct tree *tree = tw->tree; + uint32_t nskey; + double value; + GtkAdjustment *vscroll; + GtkAdjustment *hscroll; + GtkAdjustment *scroll = NULL; + gdouble hpage, vpage; + bool edited; + + nskey = gtk_gui_gdkkey_to_nskey(event); + + + vscroll = gtk_scrolled_window_get_vadjustment(tw->scrolled); + hscroll = gtk_scrolled_window_get_hadjustment(tw->scrolled); + g_object_get(vscroll, "page-size", &vpage, NULL); + g_object_get(hscroll, "page-size", &hpage, NULL); + + + edited = tree_is_edited(tree); + + switch (event->keyval) { + case GDK_Home: + case GDK_KP_Home: + if (edited) + break; + scroll = vscroll; + value = scroll->lower; + break; + + case GDK_End: + case GDK_KP_End: + if (edited) + break; + scroll = vscroll; + value = scroll->upper - vpage; + if (value < scroll->lower) + value = scroll->lower; + break; + + case GDK_Left: + case GDK_KP_Left: + if (edited) + break; + scroll = hscroll; + value = gtk_adjustment_get_value(scroll) - + scroll->step_increment; + if (value < scroll->lower) + value = scroll->lower; + break; + + case GDK_Up: + case GDK_KP_Up: + scroll = vscroll; + value = gtk_adjustment_get_value(scroll) - + scroll->step_increment; + if (value < scroll->lower) + value = scroll->lower; + break; + + case GDK_Right: + case GDK_KP_Right: + if (edited) + break; + scroll = hscroll; + value = gtk_adjustment_get_value(scroll) + + scroll->step_increment; + if (value > scroll->upper - hpage) + value = scroll->upper - hpage; + break; + + case GDK_Down: + case GDK_KP_Down: + scroll = vscroll; + value = gtk_adjustment_get_value(scroll) + + scroll->step_increment; + if (value > scroll->upper - vpage) + value = scroll->upper - vpage; + break; + + case GDK_Page_Up: + case GDK_KP_Page_Up: + scroll = vscroll; + value = gtk_adjustment_get_value(scroll) - + scroll->page_increment; + if (value < scroll->lower) + value = scroll->lower; + break; + + case GDK_Page_Down: + case GDK_KP_Page_Down: + scroll = vscroll; + value = gtk_adjustment_get_value(scroll) + + scroll->page_increment; + if (value > scroll->upper - vpage) + value = scroll->upper - vpage; + break; + default: + tree_keypress(tree, nskey); + return TRUE; + } + + if (scroll != NULL) + gtk_adjustment_set_value(scroll, value); + + tree_keypress(tree, nskey); + + return TRUE; +} + +static const struct treeview_table nsgtk_tree_callbacks = { + .redraw_request = nsgtk_tree_redraw_request, + .resized = nsgtk_tree_resized, + .scroll_visible = nsgtk_tree_scroll_visible, + .get_window_dimensions = nsgtk_tree_get_window_dimensions +}; + +struct nsgtk_treeview *nsgtk_treeview_create(unsigned int flags, + GtkWindow *window, GtkScrolledWindow *scrolled, + GtkDrawingArea *drawing_area) +{ + struct nsgtk_treeview *tv; + + tv = malloc(sizeof(struct nsgtk_treeview)); + if (tv == NULL) { + LOG(("malloc failed")); + warn_user("NoMemory", 0); + return NULL; + } + + tv->window = window; + tv->scrolled = scrolled; + tv->drawing_area = drawing_area; + tv->tree = tree_create(flags, &nsgtk_tree_callbacks, tv); + tv->mouse_state = 0; + + gtk_widget_modify_bg(GTK_WIDGET(drawing_area), GTK_STATE_NORMAL, + &((GdkColor) { 0, 0xffff, 0xffff, 0xffff } )); + +#define CONNECT(obj, sig, callback, ptr) \ + g_signal_connect(G_OBJECT(obj), (sig), G_CALLBACK(callback), (ptr)) + + CONNECT(drawing_area, "expose_event", + nsgtk_tree_window_expose_event, + tv->tree); + CONNECT(drawing_area, "button_press_event", + nsgtk_tree_window_button_press_event, + tv); + CONNECT(drawing_area, "button_release_event", + nsgtk_tree_window_button_release_event, + tv); + CONNECT(drawing_area, "motion_notify_event", + nsgtk_tree_window_motion_notify_event, + tv); + CONNECT(drawing_area, "key_press_event", + nsgtk_tree_window_keypress_event, + tv); + return tv; +} |