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/*
* Copyright 2005 Richard Wilson <info@tinct.net>
* Copyright 2010 Stephen Fryatt <stevef@netsurf-browser.org>
*
* 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 <oslib/os.h>
#include <assert.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <swis.h>
#include <time.h>
#include "oslib/colourtrans.h"
#include "oslib/dragasprite.h"
#include "oslib/osbyte.h"
#include "oslib/osspriteop.h"
#include "oslib/wimp.h"
#include "content/urldb.h"
#include "desktop/browser.h"
#include "desktop/plotters.h"
#include "desktop/textinput.h"
#include "desktop/tree.h"
#include "desktop/tree_url_node.h"
#include "riscos/bitmap.h"
#include "riscos/dialog.h"
#include "riscos/gui.h"
#include "riscos/image.h"
#include "riscos/menus.h"
#include "riscos/toolbar.h"
#include "riscos/tinct.h"
#include "riscos/textarea.h"
#include "riscos/treeview.h"
#include "riscos/wimp.h"
#include "riscos/wimp_event.h"
#include "riscos/wimputils.h"
#include "utils/log.h"
#include "utils/messages.h"
#include "utils/utils.h"
#ifndef wimp_KEY_END
#define wimp_KEY_END wimp_KEY_COPY
#endif
/** \todo Ugh! */
const char tree_directory_icon_name[] = "directory.png";
const char tree_content_icon_name[] = "content.png";
struct ro_treeview
{
struct tree *tree; /*< Pointer to treeview tree block. */
wimp_w w; /*< RO Window Handle for tree window. */
struct toolbar *tb; /*< Pointer to toolbar block. */
struct {
int x; /*< X origin of tree, to RO work area. */
int y; /*< Y origin of tree, to RO work area. */
} origin;
struct {
int x; /*< X dimension of the tree, in RO units. */
int y; /*< Y dimension of the tree, in RO units. */
} size; /* (Dimensions are 0 until set correctly). */
struct {
int x; /*< X extent of the window, in RO units. */
int y; /*< Y extent of the window, in RO units. */
} extent; /* (Extents are 0 until set correctly). */
struct {
int x; /*< X coordinate of drag start */
int y; /*< Y coordinate of drag start */
} drag_start;
tree_drag_type drag; /*< The current drag type for the tree */
struct ro_treeview_callbacks *callbacks; /*< Callback handlers */
};
static void ro_treeview_redraw_request(int x, int y, int width, int height,
void *pw);
static void ro_treeview_resized(struct tree *tree, int width, int height,
void *pw);
static void ro_treeview_scroll_visible(int y, int height, void *pw);
static void ro_treeview_get_window_dimensions(int *width, int *height,
void *pw);
static void ro_treeview_redraw(wimp_draw *redraw);
static void ro_treeview_redraw_loop(wimp_draw *redraw, ro_treeview *tv,
osbool more);
static void ro_treeview_open(wimp_open *open);
static bool ro_treeview_mouse_click(wimp_pointer *pointer);
static void ro_treeview_drag_start(ro_treeview *tv, wimp_pointer *pointer,
wimp_window_state *state);
static bool ro_treeview_keypress(wimp_key *key);
static void ro_treeview_set_window_extent(ro_treeview *tv,
int width, int height);
static void ro_treeview_update_theme(void *data, bool ok);
static void ro_treeview_update_toolbar(void *data);
static void ro_treeview_button_update(void *data);
static void ro_treeview_save_toolbar_buttons(void *data, char *config);
static void ro_treeview_button_click(void *data,
toolbar_action_type action_type, union toolbar_action action);
static const struct treeview_table ro_tree_callbacks = {
ro_treeview_redraw_request,
ro_treeview_resized,
ro_treeview_scroll_visible,
ro_treeview_get_window_dimensions
};
static const struct toolbar_callbacks ro_treeview_toolbar_callbacks = {
ro_treeview_update_theme,
ro_treeview_update_toolbar,
ro_treeview_button_update,
ro_treeview_button_click,
NULL, /* No toolbar keypress handler */
ro_treeview_save_toolbar_buttons
};
/**
* Create a RISC OS GUI implementation of a treeview tree.
*
* \param window The window to create the tree in.
* \param *toolbar A toolbar to attach to the window.
* \param *callbacks Callbacks to service the treeview.
* \param flags The treeview flags.
*
* \return The RISC OS treeview pointer.
*/
ro_treeview *ro_treeview_create(wimp_w window, struct toolbar *toolbar,
struct ro_treeview_callbacks *callbacks, unsigned int flags)
{
ro_treeview *tv;
/* Claim memory for the treeview block, and create a tree. */
tv = malloc(sizeof(ro_treeview));
if (tv == NULL)
return NULL;
tv->w = window;
tv->tb = toolbar;
tv->tree = tree_create(flags, &ro_tree_callbacks, tv);
if (tv->tree == NULL) {
free(tv);
return NULL;
}
/* Set the tree redraw origin at a default 0,0 RO units. */
tv->origin.x = 0;
tv->origin.y = 0;
/* Set the tree size as 0,0 to indicate that we don't know. */
tv->size.x = 0;
tv->size.y = 0;
/* Set the tree window extent to 0,0, to indicate that we
* don't know. */
tv->extent.x = 0;
tv->extent.y = 0;
/* Set that there is no drag opperation at the moment */
tv->drag = TREE_NO_DRAG;
/* Record the callback info. */
tv->callbacks = callbacks;
/* Register wimp events to handle the supplied window. */
ro_gui_wimp_event_register_redraw_window(tv->w, ro_treeview_redraw);
ro_gui_wimp_event_register_open_window(tv->w, ro_treeview_open);
ro_gui_wimp_event_register_mouse_click(tv->w, ro_treeview_mouse_click);
ro_gui_wimp_event_register_keypress(tv->w, ro_treeview_keypress);
ro_gui_wimp_event_set_user_data(tv->w, tv);
return tv;
}
/**
* Delete a RISC OS GUI implementation of a treeview tree. The window is
* *not* destroyed -- this must be done by the caller.
*
* \param tv The RISC OS treeview to delete.
*/
void ro_treeview_destroy(ro_treeview *tv)
{
ro_gui_wimp_event_finalise(tv->w);
tree_delete(tv->tree);
free(tv);
}
/**
* Return a pointer to a toolbar callbacks structure with the handlers to be
* used by any treeview window toolbars.
*
* \return A pointer to the callback structure.
*/
const struct toolbar_callbacks *ro_treeview_get_toolbar_callbacks(void)
{
return &ro_treeview_toolbar_callbacks;
}
/**
* Change the redraw origin of a treeview tree in RISC OS graphics units.
*
* \param *tv The ro_treeview object to update.
* \param x The X position, in terms of the RO window work area.
* \param y The Y position, in terms of the RO window work area.
*
* \todo -- this probably needs a rework.
*/
void ro_treeview_set_origin(ro_treeview *tv, int x, int y)
{
if (tv != NULL) {
tv->origin.x = x;
tv->origin.y = y;
/* Assuming that we know how big the tree currently is, then
* adjust the window work area extent to match. If we don't,
* then presumably the tree isn't in an open window yet and
* a subsequent Open Window Event should pick it up.
*/
if (tv->size.x != 0 && tv->size.y != 0)
ro_treeview_set_window_extent(tv,
tv->origin.x + tv->size.x,
tv->origin.y + tv->size.y);
}
}
/**
* Return details of the tree block associated with an ro_treeview object.
*
* \param *tv The ro_treeview object of interest.
* \return A pointer to the associated tree block.
*/
struct tree *ro_treeview_get_tree(ro_treeview *tv)
{
return (tv != NULL) ? (tv->tree) : (NULL);
}
/**
* Return details of the RISC OS window handle associated with an
* ro_treeview object.
*
* \param *tv The ro_treeview object of interest.
* \return The associated RISC OS window handle.
*/
wimp_w ro_treeview_get_window(ro_treeview *tv)
{
return (tv != NULL) ? (tv->w) : (NULL);
}
/**
* Return an indication of whether the supplied treeview object contains a
* selection.
*
* \param *tv The ro_treeview object of interest.
* \return true if there is a selection in the tree; else false.
*/
bool ro_treeview_has_selection(ro_treeview *tv)
{
if (tv != NULL)
return tree_node_has_selection(tree_get_root(tv->tree));
else
return false;
}
/**
* Callback to force a redraw of part of the treeview window.
*
* \param x Min X Coordinate of area to be redrawn.
* \param y Min Y Coordinate of area to be redrawn.
* \param width Width of area to be redrawn.
* \param height Height of area to be redrawn.
* \param pw The treeview object to be redrawn.
*/
void ro_treeview_redraw_request(int x, int y, int width, int height,
void *pw)
{
if (pw != NULL) {
ro_treeview *tv = (ro_treeview *) pw;
os_error *error;
wimp_draw update;
osbool more;
/* The scale can't be changed; it's always 1:1. */
plot = ro_plotters;
ro_plot_set_scale(1.0);
update.w = tv->w;
update.box.x0 = (2 * x) + tv->origin.x;
update.box.y0 = (-2 * (y + height)) + tv->origin.y;
update.box.x1 = (2 * (x + width)) + tv->origin.x;
update.box.y1 = (-2 * y) + tv->origin.y;
error = xwimp_update_window(&update, &more);
if (error) {
LOG(("xwimp_update_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
ro_treeview_redraw_loop(&update, tv, more);
}
}
/**
* Pass RISC OS redraw events on to the treeview widget.
*
* \param *redraw Pointer to Redraw Event block.
*/
void ro_treeview_redraw(wimp_draw *redraw)
{
osbool more;
os_error *error;
ro_treeview *tv;
tv = (ro_treeview *) ro_gui_wimp_event_get_user_data(redraw->w);
if (tv == NULL) {
LOG(("NULL treeview block for window: 0x%x",
(unsigned int) redraw->w));
/* Don't return, as not servicing redraw events isn't a good
* idea. The following code must handle (tv == NULL)
* gracefully while clearing the redraw queue.
*/
}
/* The scale can't be changed; it's always 1:1. */
plot = ro_plotters;
ro_plot_set_scale(1.0);
error = xwimp_redraw_window(redraw, &more);
if (error) {
LOG(("xwimp_redraw_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
ro_treeview_redraw_loop(redraw, tv, more);
}
/**
* Redraw a treeview window, once the initial readraw block has been collected.
*
* /param *redraw Pointer to redraw block.
* /param *tv The treeview object being redrawn.
* /param more Flag to show if more actions are required.
*/
void ro_treeview_redraw_loop(wimp_draw *redraw, ro_treeview *tv, osbool more)
{
os_error *error;
while (more) {
ro_plot_origin_x = redraw->box.x0 - redraw->xscroll;
ro_plot_origin_y = redraw->box.y1 - redraw->yscroll;
if (tv != NULL && tv->tree != NULL) {
struct rect clip;
tree_draw(tv->tree, tv->origin.x/2, -(tv->origin.y/2),
(redraw->clip.x0
-(ro_plot_origin_x+tv->origin.x))/2,
((ro_plot_origin_y+tv->origin.y)
-redraw->clip.y1)/2,
(redraw->clip.x1 - redraw->clip.x0)/2,
(redraw->clip.y1 - redraw->clip.y0)/2);
/* Put the graphcis window back how the Wimp set it. */
clip.x0 = (redraw->clip.x0 - ro_plot_origin_x) / 2;
clip.y0 = (ro_plot_origin_y - redraw->clip.y1) / 2;
clip.x1 = (redraw->clip.x1 - ro_plot_origin_x) / 2;
clip.y1 = (ro_plot_origin_y - redraw->clip.y0) / 2;
plot.clip(&clip);
}
error = xwimp_get_rectangle(redraw, &more);
if (error) {
LOG(("xwimp_redraw_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
}
}
/**
* Callback to notify us of a new overall tree size.
*
* \param tree The tree being resized.
* \param width The new width of the window.
* \param height The new height of the window.
* \param *pw The treeview object to be resized.
*/
void ro_treeview_resized(struct tree *tree, int width, int height,
void *pw)
{
if (pw != NULL) {
ro_treeview *tv = (ro_treeview *) pw;
/* Store the width and height in terms of RISC OS work area. */
tv->size.x = width * 2;
tv->size.y = -(height * 2);
/* Resize the window. */
ro_treeview_set_window_extent(tv, tv->size.x, tv->size.y);
}
}
/**
* Callback to request that a section of the tree is scrolled into view.
*
* \param y The Y coordinate of top of the area in NS units.
* \param height The height of the area in NS units.
* \param *pw The treeview object affected.
*/
void ro_treeview_scroll_visible(int y, int height, void *pw)
{
if (pw != NULL) {
ro_treeview *tv = (ro_treeview *) pw;
os_error *error;
wimp_window_state state;
int visible_t, visible_b;
int request_t, request_b;
state.w = tv->w;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
/* Work out top and bottom of both the currently visible and
* the required areas, in terms of the RO work area.
*/
visible_t = state.yscroll;
visible_b = state.yscroll
- (state.visible.y1 - state.visible.y0);
request_t = -(2 * y);// - tv->origin.y;
request_b = -(2 * (y + height));// - tv->origin.y;
/* If the area is outside the visible window, then scroll it
* in to view.
*/
if (request_t > visible_t || request_b < visible_b) {
if (request_t > visible_t) {
state.yscroll = request_t;
} else if (request_b < visible_b) {
state.yscroll = request_b + tv->origin.y
+ (state.visible.y1 - state.visible.y0);
/* If the required area is bigger than the
* visible extent, then align to the top and
* let the bottom disappear out of view.
*/
if (state.yscroll < request_t)
state.yscroll = request_t;
}
error = xwimp_open_window((wimp_open *) &state);
if (error) {
LOG(("xwimp_open_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
}
}
}
/**
* Callback to return the tree window dimensions to the treeview system.
*
* \param *width Return the window width.
* \param *height Return the window height.
* \param *pw The treeview object to use.
*/
void ro_treeview_get_window_dimensions(int *width, int *height,
void *pw)
{
if (pw != NULL && (width != NULL || height != NULL)) {
ro_treeview *tv = (ro_treeview *) pw;
os_error *error;
wimp_window_state state;
state.w = tv->w;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
if (width != NULL)
*width = (state.visible.x1 - state.visible.x0) / 2;
if (height != NULL)
*height = (state.visible.y1 - state.visible.y0) / 2;
}
}
/**
* Resize the RISC OS window extent of a treeview.
*
* \param *tv The RISC OS treeview object to resize.
* \param width The new width of the work area, in RO units.
* \param height The new height of the work area, in RO units.
*/
void ro_treeview_set_window_extent(ro_treeview *tv, int width, int height)
{
if (tv != NULL) {
os_error *error;
os_box extent;
wimp_window_state state;
int new_x, new_y;
int visible_x, visible_y;
int new_x_scroll, new_y_scroll;
/* Calculate the new window extents, in RISC OS units. */
new_x = width + tv->origin.x;
new_y = height + tv->origin.y;
/* Get details of the existing window, and start to sanity
* check the new extents.
*/
state.w = tv->w;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
/* If the extent is smaller than the current visible area,
* then extend it so that it matches the visible area.
*/
if (new_x < (state.visible.x1 - state.visible.x0))
new_x = state.visible.x1 - state.visible.x0;
if (new_y > (state.visible.y0 - state.visible.y1))
new_y = state.visible.y0 - state.visible.y1;
/* Calculate the maximum visible coordinates of the existing
* window.
*/
visible_x = state.xscroll +
(state.visible.x1 - state.visible.x0);
visible_y = state.yscroll +
(state.visible.y0 - state.visible.y1);
/* If the window is currently open, and the exising visible
* area is bigger than the new extent, then we need to reopen
* the window in an appropriare position before setting the
* new extent.
*/
if ((state.flags & wimp_WINDOW_OPEN) &&
(visible_x > new_x || visible_y < new_y)) {
new_x_scroll = state.xscroll;
new_y_scroll = state.yscroll;
if (visible_x > new_x)
new_x_scroll = new_x - (state.visible.x1
- state.visible.x0);
if (visible_y < new_y)
new_y_scroll = new_y - (state.visible.y0
- state.visible.y1);
if (new_x_scroll < 0) {
state.visible.x1 -= new_x_scroll;
state.xscroll = 0;
} else {
state.xscroll = new_x_scroll;
}
if (new_y_scroll > 0) {
state.visible.y0 += new_y_scroll;
state.yscroll = 0;
} else {
state.yscroll = new_y_scroll;
}
error = xwimp_open_window((wimp_open *) &state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
/* \todo -- Not sure if we need to reattach the
* toolbar here: the nested wimp seems to take care
* of it for us?
*/
}
/* Now that the new extent fits into the visible window, we
* can resize the work area. If we succeed, the values are
* recorded to save having to ask the Wimp for them
* each time.
*/
extent.x0 = 0;
extent.y0 = new_y;
extent.x1 = new_x;
extent.y1 = 0;
error = xwimp_set_extent(tv->w, &extent);
if (error) {
LOG(("xwimp_set_extent: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
tv->extent.x = new_x;
tv->extent.y = new_y;
}
}
/**
* Handle RISC OS Window Open events for a treeview window.
*
* \param *open Pointer to the Window Open Event block.
*/
static void ro_treeview_open(wimp_open *open)
{
ro_treeview *tv;
os_error *error;
os_box extent;
int width, height;
tv = (ro_treeview *) ro_gui_wimp_event_get_user_data(open->w);
if (tv == NULL) {
LOG(("NULL treeview block for window: ox%x",
(unsigned int) open->w));
return;
}
/* Calculate the window work area. It must be at least the same as
* the current visible area of the window, and needs to contain the
* tree as defined by size.x + offset.x and size.y + offset.y (note
* that the offset.y should be set to cover any toolbar, so we can
* ignore the size of that).
*/
width = open->visible.x1 - open->visible.x0;
height = open->visible.y0 - open->visible.y1;
if (tv->size.x != 0 && width < (tv->origin.x + tv->size.x))
width = (tv->origin.x + tv->size.x);
if (tv->size.y != 0 && height > (tv->size.y + tv->origin.y))
height = (tv->size.y + tv->origin.y);
if (width != tv->extent.x || height != tv->extent.y) {
extent.x0 = 0;
extent.y0 = height;
extent.x1 = width;
extent.y1 = 0;
error = xwimp_set_extent(tv->w, &extent);
if (error) {
LOG(("xwimp_set_extent: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
tv->extent.x = width;
tv->extent.y = height;
}
/* \todo -- Might need to add vertical scrollbar hiding back in here? */
error = xwimp_open_window(open);
if (error) {
LOG(("xwimp_open_window: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
if (tv->tb)
ro_toolbar_process(tv->tb, -1, false);
}
/**
* Pass RISC OS Mouse Click events on to the treeview widget.
*
* \param *pointer Pointer to the Mouse Click Event block.
* \return Return true if click handled; else false.
*/
static bool ro_treeview_mouse_click(wimp_pointer *pointer)
{
os_error *error;
ro_treeview *tv;
wimp_window_state state;
int xpos, ypos;
browser_mouse_state mouse;
tv = (ro_treeview *) ro_gui_wimp_event_get_user_data(pointer->w);
if (tv == NULL) {
LOG(("NULL treeview block for window: 0x%x",
(unsigned int) pointer->w));
return false;
}
state.w = tv->w;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return false;
}
/* Convert the returned mouse coordinates into NetSurf's internal
* units.
*/
xpos = ((pointer->pos.x - state.visible.x0) +
state.xscroll - tv->origin.x) / 2;
ypos = ((state.visible.y1 - pointer->pos.y) -
state.yscroll + tv->origin.y) / 2;
/* Start to process the mouse click.
*
* Select and Adjust are processed normally. To get filer-like operation
* with selections, Menu clicks are passed to the treeview first as
* Select if there are no selected nodes in the tree.
*/
mouse = 0;
if (pointer->buttons == wimp_CLICK_MENU) {
if (!tree_node_has_selection(tree_get_root(tv->tree)))
mouse |= BROWSER_MOUSE_CLICK_1;
} else {
mouse = ro_gui_mouse_click_state(pointer->buttons,
wimp_BUTTON_DOUBLE_CLICK_DRAG);
/* Give the window input focus on Select-clicks. This wouldn't
* be necessary if the core used the RISC OS caret.
*/
if (mouse & BROWSER_MOUSE_CLICK_1)
xwimp_set_caret_position(tv->w, -1, -100, -100, 32, -1);
}
if (mouse != 0) {
tree_mouse_action(tv->tree, mouse, xpos, ypos);
tv->drag = tree_drag_status(tv->tree);
if (tv->drag != TREE_NO_DRAG) {
tv->drag_start.x = xpos;
tv->drag_start.y = ypos;
}
/* If it's a visible drag, start the RO side of the visible
* effects.
*/
if (tv->drag == TREE_SELECT_DRAG ||
tv->drag == TREE_MOVE_DRAG)
ro_treeview_drag_start(tv, pointer, &state);
if (tv->callbacks != NULL &&
tv->callbacks->toolbar_button_update != NULL)
tv->callbacks->toolbar_button_update();
}
/* We assume that the owning module will have attached a window menu
* to our parent window with the auto flag unset (so that we can fudge
* the selection above). If it hasn't, this call will quietly fail.
*/
if (pointer->buttons == wimp_CLICK_MENU)
ro_gui_wimp_event_process_window_menu_click(pointer);
return true;
}
/**
* Track the mouse under Null Polls from the wimp, to support dragging.
*
* \param *pointer Pointer to a Wimp Pointer block.
*/
void ro_treeview_mouse_at(wimp_pointer *pointer)
{
os_error *error;
ro_treeview *tv;
wimp_window_state state;
int xpos, ypos;
browser_mouse_state mouse;
if (pointer->buttons & (wimp_CLICK_MENU))
return;
tv = (ro_treeview *) ro_gui_wimp_event_get_user_data(pointer->w);
if (tv == NULL) {
LOG(("NULL treeview block for window: 0x%x",
(unsigned int) pointer->w));
return;
}
if (tv->drag == TREE_NO_DRAG)
return;
/* We know now that it's not a Menu click and the treeview thinks
* that a drag is in progress.
*/
state.w = tv->w;
error = xwimp_get_window_state(&state);
if (error) {
LOG(("xwimp_get_window_state: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
return;
}
/* Convert the returned mouse coordinates into NetSurf's internal
* units.
*/
xpos = ((pointer->pos.x - state.visible.x0) +
state.xscroll - tv->origin.x) / 2;
ypos = ((state.visible.y1 - pointer->pos.y) -
state.yscroll + tv->origin.y) / 2;
/* Start to process the mouse click. */
mouse = ro_gui_mouse_drag_state(pointer->buttons,
wimp_BUTTON_DOUBLE_CLICK_DRAG);
tree_mouse_action(tv->tree, mouse, xpos, ypos);
if (!(mouse & BROWSER_MOUSE_DRAG_ON)) {
tree_drag_end(tv->tree, mouse, tv->drag_start.x,
tv->drag_start.y, xpos, ypos);
tv->drag = TREE_NO_DRAG;
}
if (tv->callbacks != NULL &&
tv->callbacks->toolbar_button_update != NULL)
tv->callbacks->toolbar_button_update();
}
/**
* Start a RISC OS drag event to reflect on screen what is happening
* during the core tree drag.
*
* \param *tv The RO treeview to which the drag is attached.
* \param *pointer The RO pointer event data block starting the drag.
* \param *state The RO window state block for the treeview window.
*/
static void ro_treeview_drag_start(ro_treeview *tv, wimp_pointer *pointer,
wimp_window_state *state)
{
os_error *error;
wimp_drag drag;
wimp_auto_scroll_info auto_scroll;
drag.w = tv->w;
drag.bbox.x0 = state->visible.x0;
drag.bbox.y0 = state->visible.y0;
drag.bbox.x1 = state->visible.x1;
drag.bbox.y1 = state->visible.y1 -
ro_toolbar_height(tv->tb);
switch (tv->drag) {
case TREE_SELECT_DRAG:
drag.type = wimp_DRAG_USER_RUBBER;
drag.initial.x0 = pointer->pos.x;
drag.initial.y0 = pointer->pos.y;
drag.initial.x1 = pointer->pos.x;
drag.initial.y1 = pointer->pos.y;
break;
case TREE_MOVE_DRAG:
drag.type = wimp_DRAG_USER_FIXED;
drag.initial.x0 = pointer->pos.x - 4;
drag.initial.y0 = pointer->pos.y - 48;
drag.initial.x1 = pointer->pos.x + 48;
drag.initial.y1 = pointer->pos.y + 4;
break;
default:
/* No other drag types are supported. */
break;
}
error = xwimp_drag_box_with_flags(&drag,
wimp_DRAG_BOX_KEEP_IN_LINE | wimp_DRAG_BOX_CLIP);
if (error) {
LOG(("xwimp_drag_box: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
} else {
auto_scroll.w = tv->w;
auto_scroll.pause_zone_sizes.x0 = 80;
auto_scroll.pause_zone_sizes.y0 = 80;
auto_scroll.pause_zone_sizes.x1 = 80;
auto_scroll.pause_zone_sizes.y1 = 80 +
ro_toolbar_height(tv->tb);
auto_scroll.pause_duration = 0;
auto_scroll.state_change = (void *) 1;
error = xwimp_auto_scroll(wimp_AUTO_SCROLL_ENABLE_VERTICAL,
&auto_scroll, NULL);
if (error) {
LOG(("xwimp_auto_scroll: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
gui_current_drag_type = GUI_DRAG_TREEVIEW;
}
}
/**
* Process RISC OS User Drag Box events which relate to us: in effect, drags
* started by ro_treeview_drag_start().
*
* \param *drag Pointer to the User Drag Box Event block.
*/
void ro_treeview_drag_end(wimp_dragged *drag)
{
os_error *error;
error = xwimp_drag_box((wimp_drag *) -1);
if (error) {
LOG(("xwimp_drag_box: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
error = xwimp_auto_scroll(0, NULL, NULL);
if (error) {
LOG(("xwimp_auto_scroll: 0x%x: %s",
error->errnum, error->errmess));
warn_user("WimpError", error->errmess);
}
gui_current_drag_type = GUI_DRAG_NONE;
}
/**
* Pass RISC OS keypress events on to the treeview widget.
*
* \param *key Pointer to the Key Pressed Event block.
* \return Return true if keypress handled; else false.
*/
static bool ro_treeview_keypress(wimp_key *key)
{
ro_treeview *tv;
uint32_t c;
tv = (ro_treeview *) ro_gui_wimp_event_get_user_data(key->w);
if (tv == NULL) {
LOG(("NULL treeview block for window: 0x%x",
(unsigned int) key->w));
return false;
}
c = (uint32_t) key->c;
if ((unsigned)c < 0x20 || (0x7f <= c && c <= 0x9f) ||
(c & IS_WIMP_KEY)) {
/* Munge control keys into unused control chars */
/* We can't map onto 1->26 (reserved for ctrl+<qwerty>
That leaves 27->31 and 128->159 */
switch (c & ~IS_WIMP_KEY) {
case wimp_KEY_TAB: c = 9; break;
case wimp_KEY_SHIFT | wimp_KEY_TAB: c = 11; break;
/* cursor movement keys */
case wimp_KEY_HOME:
case wimp_KEY_CONTROL | wimp_KEY_LEFT:
c = KEY_LINE_START;
break;
case wimp_KEY_END:
if (os_version >= RISCOS5)
c = KEY_LINE_END;
else
c = KEY_DELETE_RIGHT;
break;
case wimp_KEY_CONTROL | wimp_KEY_RIGHT: c = KEY_LINE_END; break;
case wimp_KEY_CONTROL | wimp_KEY_UP: c = KEY_TEXT_START; break;
case wimp_KEY_CONTROL | wimp_KEY_DOWN: c = KEY_TEXT_END; break;
case wimp_KEY_SHIFT | wimp_KEY_LEFT: c = KEY_WORD_LEFT ; break;
case wimp_KEY_SHIFT | wimp_KEY_RIGHT: c = KEY_WORD_RIGHT; break;
case wimp_KEY_SHIFT | wimp_KEY_UP: c = KEY_PAGE_UP; break;
case wimp_KEY_SHIFT | wimp_KEY_DOWN: c = KEY_PAGE_DOWN; break;
case wimp_KEY_LEFT: c = KEY_LEFT; break;
case wimp_KEY_RIGHT: c = KEY_RIGHT; break;
case wimp_KEY_UP: c = KEY_UP; break;
case wimp_KEY_DOWN: c = KEY_DOWN; break;
/* editing */
case wimp_KEY_CONTROL | wimp_KEY_END:
c = KEY_DELETE_LINE_END;
break;
case wimp_KEY_DELETE:
if (ro_gui_ctrl_pressed())
c = KEY_DELETE_LINE_START;
else if (os_version < RISCOS5)
c = KEY_DELETE_LEFT;
break;
default:
break;
}
}
if (!(c & IS_WIMP_KEY)) {
if (tree_keypress(tv->tree, c)) {
if (tv->callbacks &&
tv->callbacks->toolbar_button_update
!= NULL)
tv->callbacks->toolbar_button_update();
return true;
}
}
return false;
}
/**
* Update a treeview to use a new theme.
*
* \param *data Pointer to the treeview to update.
* \param ok true if the bar still exists; else false.
*/
void ro_treeview_update_theme(void *data, bool ok)
{
ro_treeview *tv = (ro_treeview *) data;
if (tv != NULL && tv->tb != NULL){
if (ok) {
ro_treeview_update_toolbar(tv);
} else {
tv->tb = NULL;
}
}
}
/**
* Change the size of a treeview's toolbar and redraw the window.
*
* \param *data The treeview to update.
*/
void ro_treeview_update_toolbar(void *data)
{
ro_treeview *tv = (ro_treeview *) data;
if (tv != NULL && tv->tb != NULL) {
ro_treeview_set_origin(tv, 0,
-(ro_toolbar_height(tv->tb)));
xwimp_force_redraw(tv->w, 0, tv->extent.y, tv->extent.x, 0);
}
}
/**
* Update the toolbar icons in a treeview window's toolbar. As we're just
* an intermediate widget, we pass the details on down the chain.
*
* \param *data The treeview owning the toolbar.
*/
void ro_treeview_button_update(void *data)
{
ro_treeview *tv = (ro_treeview *) data;
if (tv == NULL || tv->callbacks == NULL)
return;
if (tv->callbacks->toolbar_button_update != NULL)
tv->callbacks->toolbar_button_update();
}
/**
* Save a new button configuration from a treeview window's toolbar. As
* we're just an intermediate widget, we pass the details on.
*
* \param *data The treeview owning the toolbar.
* \param *config The new button config string.
*/
void ro_treeview_save_toolbar_buttons(void *data, char *config)
{
ro_treeview *tv = (ro_treeview *) data;
if (tv == NULL || tv->callbacks == NULL)
return;
if (tv->callbacks->toolbar_button_save != NULL)
tv->callbacks->toolbar_button_save(config);
}
/**
* Process clicks on buttons in a treeview window's toolbar. As we're just
* an intermediate widget, we just pass the details on down the chain.
*
* \param *data The treeview owning the click.
* \param action_type The action type to be handled.
* \param action The action to handle.
*/
void ro_treeview_button_click(void *data,
toolbar_action_type action_type, union toolbar_action action)
{
ro_treeview *tv = (ro_treeview *) data;
if (tv == NULL || tv->callbacks == NULL ||
action_type != TOOLBAR_ACTION_BUTTON)
return;
if (tv->callbacks->toolbar_button_click != NULL)
tv->callbacks->toolbar_button_click(action.button);
if (tv->callbacks->toolbar_button_update != NULL)
tv->callbacks->toolbar_button_update();
}
/**
* Return a token identifying the interactive help message for a given cursor
* position.
*
* Currently this is inimplemented.
*
* \param *message_data Pointer to the Wimp's help message block.
* \return Token value (-1 indicates no help available).
*/
int ro_treeview_get_help(help_full_message_request *message_data)
{
return -1;
}
/**
* Convert a content type into an icon name.
*
* \todo -- Currently we don't have any icons apart from the default.
*
* \param *buffer A buffer to return the icon name
* \param type The content type to return an icon name for.
*/
void tree_icon_name_from_content_type(char *buffer, content_type type)
{
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;
}
}
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