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authorMichael Drake <tlsa@netsurf-browser.org>2010-06-04 09:35:08 +0000
committerMichael Drake <tlsa@netsurf-browser.org>2010-06-04 09:35:08 +0000
commitb010a257712b3d104035cbfc15aba8f517ffacb5 (patch)
treeba220c9c0c2c02ea1a8441ad8ace44d4c0bc5164 /render
parentbc9fef0a1a7a45a640d37353f97e72006e1e09b6 (diff)
downloadnetsurf-b010a257712b3d104035cbfc15aba8f517ffacb5.tar.gz
netsurf-b010a257712b3d104035cbfc15aba8f517ffacb5.tar.bz2
+ Refactor input handling from browser window code into content
handlers. + Disentangle all box tree manipulation from browser window code and put it where it belongs. + Move other content specific and other irrelevant code from browser window handling to appropriate places. + Put mouse state enum in new mouse header, since it's not just used by browser window code, and it is used by treeview windows on the treeview branch. svn path=/trunk/netsurf/; revision=10561
Diffstat (limited to 'render')
-rw-r--r--render/box.c235
-rw-r--r--render/box.h2
-rw-r--r--render/form.c231
-rw-r--r--render/form.h7
-rw-r--r--render/html.c45
-rw-r--r--render/html.h23
-rw-r--r--render/html_interaction.c882
-rw-r--r--render/textplain.c88
-rw-r--r--render/textplain.h5
9 files changed, 1508 insertions, 10 deletions
diff --git a/render/box.c b/render/box.c
index e61dee8ff..439ae0353 100644
--- a/render/box.c
+++ b/render/box.c
@@ -2,6 +2,7 @@
* Copyright 2005-2007 James Bursa <bursa@users.sourceforge.net>
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
* Copyright 2005 John M Bell <jmb202@ecs.soton.ac.uk>
+ * Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@@ -34,11 +35,18 @@
#include "desktop/options.h"
#include "render/box.h"
#include "render/form.h"
+#include "render/html.h"
#include "utils/log.h"
#include "utils/talloc.h"
#include "utils/utils.h"
static bool box_contains_point(struct box *box, int x, int y, bool *physically);
+static bool box_nearer_text_box(struct box *box, int bx, int by,
+ int x, int y, int dir, struct box **nearest, int *tx, int *ty,
+ int *nr_xd, int *nr_yd);
+static bool box_nearest_text_box(struct box *box, int bx, int by,
+ int fx, int fy, int x, int y, int dir, struct box **nearest,
+ int *tx, int *ty, int *nr_xd, int *nr_yd);
#define box_is_float(box) (box->type == BOX_FLOAT_LEFT || \
box->type == BOX_FLOAT_RIGHT)
@@ -610,6 +618,229 @@ struct box *box_href_at_point(hlcache_handle *h, int x, int y)
/**
+ * Check whether box is nearer mouse coordinates than current nearest box
+ *
+ * \param box box to test
+ * \param bx position of box, in global document coordinates
+ * \param by position of box, in global document coordinates
+ * \param x mouse point, in global document coordinates
+ * \param y mouse point, in global document coordinates
+ * \param dir direction in which to search (-1 = above-left,
+ * +1 = below-right)
+ * \param nearest nearest text box found, or NULL if none
+ * updated if box is nearer than existing nearest
+ * \param tx position of text_box, in global document coordinates
+ * updated if box is nearer than existing nearest
+ * \param ty position of text_box, in global document coordinates
+ * updated if box is nearer than existing nearest
+ * \param nr_xd distance to nearest text box found
+ * updated if box is nearer than existing nearest
+ * \param ny_yd distance to nearest text box found
+ * updated if box is nearer than existing nearest
+ * \return true if mouse point is inside box
+ */
+
+bool box_nearer_text_box(struct box *box, int bx, int by,
+ int x, int y, int dir, struct box **nearest, int *tx, int *ty,
+ int *nr_xd, int *nr_yd)
+{
+ int w = box->padding[LEFT] + box->width + box->padding[RIGHT];
+ int h = box->padding[TOP] + box->height + box->padding[BOTTOM];
+ int y1 = by + h;
+ int x1 = bx + w;
+ int yd = INT_MAX;
+ int xd = INT_MAX;
+
+ if (x >= bx && x1 > x && y >= by && y1 > y) {
+ *nearest = box;
+ *tx = bx;
+ *ty = by;
+ return true;
+ }
+
+ if (box->parent->list_marker != box) {
+ if (dir < 0) {
+ /* consider only those children (partly) above-left */
+ if (by <= y && bx < x) {
+ yd = y <= y1 ? 0 : y - y1;
+ xd = x <= x1 ? 0 : x - x1;
+ }
+ } else {
+ /* consider only those children (partly) below-right */
+ if (y1 > y && x1 > x) {
+ yd = y > by ? 0 : by - y;
+ xd = x > bx ? 0 : bx - x;
+ }
+ }
+
+ /* give y displacement precedence over x */
+ if (yd < *nr_yd || (yd == *nr_yd && xd <= *nr_xd)) {
+ *nr_yd = yd;
+ *nr_xd = xd;
+ *nearest = box;
+ *tx = bx;
+ *ty = by;
+ }
+ }
+ return false;
+}
+
+
+/**
+ * Pick the text box child of 'box' that is closest to and above-left
+ * (dir -ve) or below-right (dir +ve) of the point 'x,y'
+ *
+ * \param box parent box
+ * \param bx position of box, in global document coordinates
+ * \param by position of box, in global document coordinates
+ * \param fx position of float parent, in global document coordinates
+ * \param fy position of float parent, in global document coordinates
+ * \param x mouse point, in global document coordinates
+ * \param y mouse point, in global document coordinates
+ * \param dir direction in which to search (-1 = above-left,
+ * +1 = below-right)
+ * \param nearest nearest text box found, or NULL if none
+ * updated if a descendant of box is nearer than old nearest
+ * \param tx position of nearest, in global document coordinates
+ * updated if a descendant of box is nearer than old nearest
+ * \param ty position of nearest, in global document coordinates
+ * updated if a descendant of box is nearer than old nearest
+ * \param nr_xd distance to nearest text box found
+ * updated if a descendant of box is nearer than old nearest
+ * \param ny_yd distance to nearest text box found
+ * updated if a descendant of box is nearer than old nearest
+ * \return true if mouse point is inside text_box
+ */
+
+bool box_nearest_text_box(struct box *box, int bx, int by,
+ int fx, int fy, int x, int y, int dir, struct box **nearest,
+ int *tx, int *ty, int *nr_xd, int *nr_yd)
+{
+ struct box *child = box->children;
+ int c_bx, c_by;
+ int c_fx, c_fy;
+ bool in_box = false;
+
+ if (*nearest == NULL) {
+ *nr_xd = INT_MAX / 2; /* displacement of 'nearest so far' */
+ *nr_yd = INT_MAX / 2;
+ }
+ if (box->type == BOX_INLINE_CONTAINER) {
+ int bw = box->padding[LEFT] + box->width + box->padding[RIGHT];
+ int bh = box->padding[TOP] + box->height + box->padding[BOTTOM];
+ int b_y1 = by + bh;
+ int b_x1 = bx + bw;
+ if (x >= bx && b_x1 > x && y >= by && b_y1 > y) {
+ in_box = true;
+ }
+ }
+
+ while (child) {
+ if (child->type == BOX_FLOAT_LEFT ||
+ child->type == BOX_FLOAT_RIGHT) {
+ c_bx = fx + child->x -
+ scroll_get_offset(child->scroll_x);
+ c_by = fy + child->y -
+ scroll_get_offset(child->scroll_y);
+ } else {
+ c_bx = bx + child->x -
+ scroll_get_offset(child->scroll_x);
+ c_by = by + child->y -
+ scroll_get_offset(child->scroll_y);
+ }
+ if (child->float_children) {
+ c_fx = c_bx;
+ c_fy = c_by;
+ } else {
+ c_fx = fx;
+ c_fy = fy;
+ }
+ if (in_box && child->text && !child->object) {
+ if (box_nearer_text_box(child,
+ c_bx, c_by, x, y, dir, nearest,
+ tx, ty, nr_xd, nr_yd))
+ return true;
+ } else {
+ if (child->list_marker) {
+ if (box_nearer_text_box(
+ child->list_marker,
+ c_bx + child->list_marker->x,
+ c_by + child->list_marker->y,
+ x, y, dir, nearest,
+ tx, ty, nr_xd, nr_yd))
+ return true;
+ }
+ if (box_nearest_text_box(child, c_bx, c_by,
+ c_fx, c_fy, x, y, dir, nearest, tx, ty,
+ nr_xd, nr_yd))
+ return true;
+ }
+ child = child->next;
+ }
+
+ return false;
+}
+
+
+/**
+ * Peform pick text on browser window contents to locate the box under
+ * the mouse pointer, or nearest in the given direction if the pointer is
+ * not over a text box.
+ *
+ * \param h html content's high level cache handle
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ * \param dir direction to search (-1 = above-left, +1 = below-right)
+ * \param dx receives x ordinate of mouse relative to text box
+ * \param dy receives y ordinate of mouse relative to text box
+ */
+
+struct box *box_pick_text_box(hlcache_handle *h,
+ int x, int y, int dir, int *dx, int *dy)
+{
+ struct box *text_box = NULL;
+
+ if (h && content_get_type(h) == CONTENT_HTML) {
+ struct box *box = html_get_box_tree(h);
+ int nr_xd, nr_yd;
+ int bx = box->margin[LEFT];
+ int by = box->margin[TOP];
+ int fx = bx;
+ int fy = by;
+ int tx, ty;
+
+ if (!box_nearest_text_box(box, bx, by, fx, fy, x, y,
+ dir, &text_box, &tx, &ty, &nr_xd, &nr_yd)) {
+ if (text_box && text_box->text && !text_box->object) {
+ int w = (text_box->padding[LEFT] +
+ text_box->width +
+ text_box->padding[RIGHT]);
+ int h = (text_box->padding[TOP] +
+ text_box->height +
+ text_box->padding[BOTTOM]);
+ int x1, y1;
+
+ y1 = ty + h;
+ x1 = tx + w;
+
+ /* ensure point lies within the text box */
+ if (x < tx) x = tx;
+ if (y < ty) y = ty;
+ if (y > y1) y = y1;
+ if (x > x1) x = x1;
+ }
+ }
+
+ /* return coordinates relative to box */
+ *dx = x - tx;
+ *dy = y - ty;
+ }
+
+ return text_box;
+}
+
+
+/**
* Find a box based upon its id attribute.
*
* \param box box tree to search
@@ -1095,7 +1326,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
box->descendant_y1 - box->descendant_y0,
box->height,
data,
- browser_scroll_callback,
+ html_overflow_scroll_callback,
&(box->scroll_y)))
return false;
} else
@@ -1120,7 +1351,7 @@ bool box_handle_scrollbars(struct browser_window *bw, struct box *box,
box->descendant_x1 - box->descendant_x0,
box->width,
data,
- browser_scroll_callback,
+ html_overflow_scroll_callback,
&box->scroll_x))
return false;
} else
diff --git a/render/box.h b/render/box.h
index b6e344af1..fd1dd5e8c 100644
--- a/render/box.h
+++ b/render/box.h
@@ -310,6 +310,8 @@ struct box *box_at_point(struct box *box, const int x, const int y,
int *box_x, int *box_y, struct hlcache_handle **content);
struct box *box_object_at_point(struct hlcache_handle *h, int x, int y);
struct box *box_href_at_point(struct hlcache_handle *h, int x, int y);
+struct box *box_pick_text_box(struct hlcache_handle *h,
+ int x, int y, int dir, int *dx, int *dy);
struct box *box_find_by_id(struct box *box, const char *id);
bool box_visible(struct box *box);
void box_dump(FILE *stream, struct box *box, unsigned int depth);
diff --git a/render/form.c b/render/form.c
index 9584aa244..71a42da4c 100644
--- a/render/form.c
+++ b/render/form.c
@@ -1,8 +1,10 @@
/*
* Copyright 2004 James Bursa <bursa@users.sourceforge.net>
* Copyright 2003 Phil Mellor <monkeyson@users.sourceforge.net>
+ * Copyright 2004 John Tytgat <joty@netsurf-browser.org>
* Copyright 2005-9 John-Mark Bell <jmb@netsurf-browser.org>
* Copyright 2009 Paul Blokus <paul_pl@users.sourceforge.net>
+ * Copyright 2010 Michael Drake <tlsa@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@@ -30,9 +32,12 @@
#include <stdio.h>
#include <string.h>
#include "content/fetch.h"
+#include "content/hlcache.h"
#include "css/css.h"
#include "css/utils.h"
+#include "desktop/browser.h"
#include "desktop/gui.h"
+#include "desktop/mouse.h"
#include "desktop/knockout.h"
#include "desktop/plot_style.h"
#include "desktop/plotters.h"
@@ -40,9 +45,11 @@
#include "render/box.h"
#include "render/font.h"
#include "render/form.h"
+#include "render/html.h"
#include "render/layout.h"
#include "utils/log.h"
#include "utils/messages.h"
+#include "utils/talloc.h"
#include "utils/url.h"
#include "utils/utf8.h"
#include "utils/utils.h"
@@ -1143,7 +1150,8 @@ void form_select_menu_clicked(struct form_control *control, int x, int y)
}
if (option != NULL)
- browser_window_form_select(menu->bw, control, i);
+ form_select_process_selection(menu->bw->current_content,
+ control, i);
menu->callback(menu->client_data, 0, 0, menu->width, menu->height);
}
@@ -1215,12 +1223,25 @@ void form_select_mouse_drag_end(struct form_control *control,
browser_mouse_state mouse, int x, int y)
{
int x0, y0, x1, y1;
+ int box_x, box_y;
+ struct box *box;
struct form_select_menu *menu = control->data.select.menu;
-
+
+ box = control->box;
+
+ /* Get global coords of scrollbar */
+ box_coords(box, &box_x, &box_y);
+ box_x -= box->border[LEFT].width;
+ box_y += box->height + box->border[BOTTOM].width +
+ box->padding[BOTTOM] + box->padding[TOP];
+
+ /* Get drag end coords relative to scrollbar */
+ x = x - box_x;
+ y = y - box_y;
+
if (menu->scroll_capture) {
x -= menu->width - SCROLLBAR_WIDTH;
- scroll_mouse_drag_end(menu->scroll,
- mouse, x, y);
+ scroll_mouse_drag_end(menu->scroll, mouse, x, y);
return;
}
@@ -1286,3 +1307,205 @@ void form_select_get_dimensions(struct form_control *control,
*width = control->data.select.menu->width;
*height = control->data.select.menu->height;
}
+
+
+/**
+ * Process a selection from a form select menu.
+ *
+ * \param bw browser window with menu
+ * \param control form control with menu
+ * \param item index of item selected from the menu
+ */
+
+void form_select_process_selection(hlcache_handle *h,
+ struct form_control *control, int item)
+{
+ struct box *inline_box;
+ struct form_option *o;
+ int count;
+ struct content *current_content;
+
+ assert(control != NULL);
+ assert(h != NULL);
+
+ /** \todo Even though the form code is effectively part of the html
+ * content handler, poking around inside contents is not good */
+ current_content = hlcache_handle_get_content(h);
+
+ inline_box = control->box->children->children;
+
+ for (count = 0, o = control->data.select.items;
+ o != NULL;
+ count++, o = o->next) {
+ if (!control->data.select.multiple)
+ o->selected = false;
+ if (count == item) {
+ if (control->data.select.multiple) {
+ if (o->selected) {
+ o->selected = false;
+ control->data.select.num_selected--;
+ } else {
+ o->selected = true;
+ control->data.select.num_selected++;
+ }
+ } else {
+ o->selected = true;
+ }
+ }
+ if (o->selected)
+ control->data.select.current = o;
+ }
+
+ talloc_free(inline_box->text);
+ inline_box->text = 0;
+ if (control->data.select.num_selected == 0)
+ inline_box->text = talloc_strdup(current_content,
+ messages_get("Form_None"));
+ else if (control->data.select.num_selected == 1)
+ inline_box->text = talloc_strdup(current_content,
+ control->data.select.current->text);
+ else
+ inline_box->text = talloc_strdup(current_content,
+ messages_get("Form_Many"));
+ if (!inline_box->text) {
+ warn_user("NoMemory", 0);
+ inline_box->length = 0;
+ } else
+ inline_box->length = strlen(inline_box->text);
+ inline_box->width = control->box->width;
+
+ html_redraw_a_box(h, control->box);
+}
+
+/**
+ * Callback for the core select menu.
+ */
+void form_select_menu_callback(void *client_data,
+ int x, int y, int width, int height)
+{
+ struct browser_window *bw = client_data;
+ int menu_x, menu_y;
+ struct box *box;
+
+ box = bw->visible_select_menu->box;
+ box_coords(box, &menu_x, &menu_y);
+
+ menu_x -= box->border[LEFT].width;
+ menu_y += box->height + box->border[BOTTOM].width +
+ box->padding[BOTTOM] +
+ box->padding[TOP];
+ browser_window_redraw_rect(bw, menu_x + x, menu_y + y,
+ width, height);
+}
+
+
+/**
+ * Set a radio form control and clear the others in the group.
+ *
+ * \param content content containing the form, of type CONTENT_TYPE
+ * \param radio form control of type GADGET_RADIO
+ */
+
+void form_radio_set(hlcache_handle *content,
+ struct form_control *radio)
+{
+ struct form_control *control;
+
+ assert(content);
+ assert(radio);
+ if (!radio->form)
+ return;
+
+ if (radio->selected)
+ return;
+
+ for (control = radio->form->controls; control;
+ control = control->next) {
+ if (control->type != GADGET_RADIO)
+ continue;
+ if (control == radio)
+ continue;
+ if (strcmp(control->name, radio->name) != 0)
+ continue;
+
+ if (control->selected) {
+ control->selected = false;
+ html_redraw_a_box(content, control->box);
+ }
+ }
+
+ radio->selected = true;
+ html_redraw_a_box(content, radio->box);
+}
+
+
+/**
+ * Collect controls and submit a form.
+ */
+
+void form_submit(hlcache_handle *h, struct browser_window *target,
+ struct form *form, struct form_control *submit_button)
+{
+ char *data = 0, *url = 0;
+ struct fetch_multipart_data *success;
+
+ assert(form);
+ assert(content_get_type(h) == CONTENT_HTML);
+
+ if (!form_successful_controls(form, submit_button, &success)) {
+ warn_user("NoMemory", 0);
+ return;
+ }
+
+ switch (form->method) {
+ case method_GET:
+ data = form_url_encode(form, success);
+ if (!data) {
+ fetch_multipart_data_destroy(success);
+ warn_user("NoMemory", 0);
+ return;
+ }
+ url = calloc(1, strlen(form->action) +
+ strlen(data) + 2);
+ if (!url) {
+ fetch_multipart_data_destroy(success);
+ free(data);
+ warn_user("NoMemory", 0);
+ return;
+ }
+ if (form->action[strlen(form->action)-1] == '?') {
+ sprintf(url, "%s%s", form->action, data);
+ }
+ else {
+ sprintf(url, "%s?%s", form->action, data);
+ }
+ browser_window_go(target, url, content_get_url(h),
+ true);
+ break;
+
+ case method_POST_URLENC:
+ data = form_url_encode(form, success);
+ if (!data) {
+ fetch_multipart_data_destroy(success);
+ warn_user("NoMemory", 0);
+ return;
+ }
+ browser_window_go_post(target, form->action, data, 0,
+ true, content_get_url(h),
+ false, true, 0);
+ break;
+
+ case method_POST_MULTIPART:
+ browser_window_go_post(target, form->action, 0,
+ success, true, content_get_url(h),
+ false, true, 0);
+ break;
+
+ default:
+ assert(0);
+ }
+
+ fetch_multipart_data_destroy(success);
+ free(data);
+ free(url);
+}
diff --git a/render/form.h b/render/form.h
index d5026e039..9da24b8b9 100644
--- a/render/form.h
+++ b/render/form.h
@@ -157,6 +157,8 @@ bool form_open_select_menu(void *client_data,
struct form_control *control,
select_menu_redraw_callback redraw_callback,
struct browser_window *bw);
+void form_select_menu_callback(void *client_data,
+ int x, int y, int width, int height);
void form_free_select_menu(struct form_control *control);
bool form_redraw_select_menu(struct form_control *control, int x, int y,
float scale,
@@ -169,5 +171,10 @@ void form_select_mouse_drag_end(struct form_control *control,
browser_mouse_state mouse, int x, int y);
void form_select_get_dimensions(struct form_control *control,
int *width, int *height);
+void form_select_process_selection(hlcache_handle *h,
+ struct form_control *control, int item);
+void form_submit(struct hlcache_handle *h, struct browser_window *target,
+ struct form *form, struct form_control *submit_button);
+void form_radio_set(struct hlcache_handle *content, struct form_control *radio);
#endif
diff --git a/render/html.c b/render/html.c
index c818d6e36..9367d78fb 100644
--- a/render/html.c
+++ b/render/html.c
@@ -1,5 +1,6 @@
/*
* Copyright 2007 James Bursa <bursa@users.sourceforge.net>
+ * Copyright 2010 Michael Drake <tlsa@netsurf-browser.org>
*
* This file is part of NetSurf, http://www.netsurf-browser.org/
*
@@ -1741,6 +1742,25 @@ void html_reformat(struct content *c, int width, int height)
/**
+ * Redraw a box.
+ *
+ * \param c content containing the box, of type CONTENT_HTML
+ * \param box box to redraw
+ */
+
+void html_redraw_a_box(hlcache_handle *h, struct box *box)
+{
+ int x, y;
+
+ box_coords(box, &x, &y);
+
+ content_request_redraw(h, x, y,
+ box->padding[LEFT] + box->width + box->padding[RIGHT],
+ box->padding[TOP] + box->height + box->padding[BOTTOM]);
+}
+
+
+/**
* Destroy a CONTENT_HTML and free all resources it owns.
*/
@@ -2190,3 +2210,28 @@ hlcache_handle *html_get_favicon(hlcache_handle *h)
return c->data.html.favicon;
}
+
+
+/**
+ * Retrieve layout coordinates of box with given id
+ *
+ * \param h HTML document to search
+ * \param frag_id String containing an element id
+ * \param x Updated to global x coord iff id found
+ * \param y Updated to global y coord iff id found
+ * \return true iff id found
+ */
+bool html_get_id_offset(hlcache_handle *h, char *frag_id, int *x, int *y)
+{
+ struct box *pos;
+ struct box *layout = html_get_box_tree(h);
+
+ if (content_get_type(h) != CONTENT_HTML)
+ return false;
+
+ if ((pos = box_find_by_id(layout, frag_id)) != 0) {
+ box_coords(pos, x, y);
+ return true;
+ }
+ return false;
+}
diff --git a/render/html.h b/render/html.h
index 8977e6dd6..a5be4d939 100644
--- a/render/html.h
+++ b/render/html.h
@@ -28,6 +28,7 @@
#include <stdbool.h>
#include "content/content_type.h"
#include "css/css.h"
+#include "desktop/mouse.h"
#include "desktop/plot_style.h"
#include "render/parser_binding.h"
@@ -41,6 +42,8 @@ struct http_parameter;
struct imagemap;
struct object_params;
struct plotters;
+struct scroll;
+struct scroll_msg_data;
/* entries in stylesheet_content */
#define STYLESHEET_BASE 0 /* base style sheet */
@@ -202,15 +205,25 @@ void html_open(struct content *c, struct browser_window *bw,
void html_close(struct content *c);
void html_set_status(struct content *c, const char *extra);
+void html_redraw_a_box(struct hlcache_handle *h, struct box *box);
+
/* in render/html_redraw.c */
bool html_redraw(struct content *c, int x, int y,
int width, int height,
int clip_x0, int clip_y0, int clip_x1, int clip_y1,
float scale, colour background_colour);
-
-/* redraw a short text string, complete with highlighting
- (for selection/search) and ghost caret */
+/* in render/html_interaction.c */
+void html_mouse_track(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y);
+void html_mouse_action(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y);
+void html_overflow_scroll_callback(void *client_data,
+ struct scroll_msg_data *scroll_data);
+void html_overflow_scroll_drag_end(struct scroll *scroll,
+ browser_mouse_state mouse, int x, int y);
+size_t html_selection_drag_end(struct hlcache_handle *h,
+ browser_mouse_state mouse, int x, int y, int dir);
bool text_redraw(const char *utf8_text, size_t utf8_len,
size_t offset, bool space,
@@ -232,7 +245,9 @@ const char *html_get_base_target(struct hlcache_handle *h);
struct html_stylesheet *html_get_stylesheets(struct hlcache_handle *h,
unsigned int *n);
struct content_html_object *html_get_objects(struct hlcache_handle *h,
- unsigned int *n);
+ unsigned int *n);
struct hlcache_handle *html_get_favicon(struct hlcache_handle *h);
+bool html_get_id_offset(struct hlcache_handle *h, char *frag_id,
+ int *x, int *y);
#endif
diff --git a/render/html_interaction.c b/render/html_interaction.c
new file mode 100644
index 000000000..90f8fe25f
--- /dev/null
+++ b/render/html_interaction.c
@@ -0,0 +1,882 @@
+/*
+ * Copyright 2006 James Bursa <bursa@users.sourceforge.net>
+ * Copyright 2006 Richard Wilson <info@tinct.net>
+ * Copyright 2008 Michael Drake <tlsa@netsurf-browser.org>
+ * 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
+ * User interaction with a CONTENT_HTML (implementation).
+ */
+
+#include <assert.h>
+#include <stdbool.h>
+
+#include "content/content.h"
+#include "desktop/browser.h"
+#include "desktop/frames.h"
+#include "desktop/mouse.h"
+#include "desktop/options.h"
+#include "desktop/scroll.h"
+#include "desktop/selection.h"
+#include "desktop/textinput.h"
+#include "render/box.h"
+#include "render/font.h"
+#include "render/form.h"
+#include "render/html.h"
+#include "render/imagemap.h"
+#include "utils/messages.h"
+#include "utils/utils.h"
+
+
+static gui_pointer_shape get_pointer_shape(struct browser_window *bw,
+ struct box *box, bool imagemap);
+static void html_box_drag_start(struct box *box, int x, int y);
+
+/**
+ * Handle mouse tracking (including drags) in an HTML content window.
+ *
+ * \param c content of type html
+ * \param bw browser window
+ * \param mouse state of mouse buttons and modifier keys
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ */
+
+void html_mouse_track(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y)
+{
+ hlcache_handle *h = bw->current_content;
+
+ switch (bw->drag_type) {
+ case DRAGGING_SELECTION: {
+ struct box *box;
+ int dir = -1;
+ int dx, dy;
+
+ if (selection_dragging_start(bw->sel)) dir = 1;
+
+ box = box_pick_text_box(h, x, y, dir,
+ &dx, &dy);
+ if (box) {
+ int pixel_offset;
+ size_t idx;
+ plot_font_style_t fstyle;
+
+ font_plot_style_from_css(box->style, &fstyle);
+
+ nsfont.font_position_in_string(&fstyle,
+ box->text, box->length,
+ dx, &idx, &pixel_offset);
+
+ selection_track(bw->sel, mouse,
+ box->byte_offset + idx);
+ }
+ }
+ break;
+
+ default:
+ html_mouse_action(c, bw, mouse, x, y);
+ break;
+ }
+}
+
+
+/**
+ * Handle mouse clicks and movements in an HTML content window.
+ *
+ * \param c content of type html
+ * \param bw browser window
+ * \param mouse state of mouse buttons and modifier keys
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ *
+ * This function handles both hovering and clicking. It is important that the
+ * code path is identical (except that hovering doesn't carry out the action),
+ * so that the status bar reflects exactly what will happen. Having separate
+ * code paths opens the possibility that an attacker will make the status bar
+ * show some harmless action where clicking will be harmful.
+ */
+
+void html_mouse_action(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y)
+{
+ enum { ACTION_NONE, ACTION_SUBMIT, ACTION_GO } action = ACTION_NONE;
+ char *title = 0;
+ const char *url = 0;
+ const char *target = 0;
+ char status_buffer[200];
+ const char *status = 0;
+ gui_pointer_shape pointer = GUI_POINTER_DEFAULT;
+ bool imagemap = false;
+ int box_x = 0, box_y = 0;
+ int gadget_box_x = 0, gadget_box_y = 0;
+ int text_box_x = 0;
+ struct box *url_box = 0;
+ struct box *gadget_box = 0;
+ struct box *text_box = 0;
+ hlcache_handle *h = bw->current_content;
+ struct box *box;
+ hlcache_handle *content = h;
+ hlcache_handle *gadget_content = h;
+ struct form_control *gadget = 0;
+ hlcache_handle *object = NULL;
+ struct box *next_box;
+ struct box *drag_candidate = NULL;
+ struct scroll *scroll = NULL;
+ plot_font_style_t fstyle;
+ int scroll_mouse_x = 0, scroll_mouse_y = 0;
+ int padding_left, padding_right, padding_top, padding_bottom;
+
+
+ if (bw->visible_select_menu != NULL) {
+ box = bw->visible_select_menu->box;
+ box_coords(box, &box_x, &box_y);
+
+ box_x -= box->border[LEFT].width;
+ box_y += box->height + box->border[BOTTOM].width +
+ box->padding[BOTTOM] + box->padding[TOP];
+ status = form_select_mouse_action(bw->visible_select_menu,
+ mouse, x - box_x, y - box_y);
+ if (status != NULL)
+ browser_window_set_status(bw, status);
+ else {
+ int width, height;
+ form_select_get_dimensions(bw->visible_select_menu,
+ &width, &height);
+ bw->visible_select_menu = NULL;
+ browser_window_redraw_rect(bw, box_x, box_y,
+ width, height);
+ }
+ return;
+ }
+
+ if (bw->scroll != NULL) {
+ struct browser_scroll_data *data = scroll_get_data(bw->scroll);
+ box = data->box;
+ box_coords(box, &box_x, &box_y);
+ if (scroll_is_horizontal(bw->scroll)) {
+ scroll_mouse_x = x - box_x ;
+ scroll_mouse_y = y - (box_y + box->padding[TOP] +
+ box->height + box->padding[BOTTOM] -
+ SCROLLBAR_WIDTH);
+ status = scroll_mouse_action(bw->scroll, mouse,
+ scroll_mouse_x, scroll_mouse_y);
+ } else {
+ scroll_mouse_x = x - (box_x + box->padding[LEFT] +
+ box->width + box->padding[RIGHT] -
+ SCROLLBAR_WIDTH);
+ scroll_mouse_y = y - box_y;
+ status = scroll_mouse_action(bw->scroll, mouse,
+ scroll_mouse_x, scroll_mouse_y);
+ }
+
+ browser_window_set_status(bw, status);
+ return;
+ }
+
+ bw->drag_type = DRAGGING_NONE;
+
+ /* search the box tree for a link, imagemap, form control, or
+ * box with scrollbars */
+
+ box = html_get_box_tree(h);
+
+ /* Consider the margins of the html page now */
+ box_x = box->margin[LEFT];
+ box_y = box->margin[TOP];
+
+ while ((next_box = box_at_point(box, x, y, &box_x, &box_y, &content)) !=
+ NULL) {
+ enum css_overflow_e overflow = CSS_OVERFLOW_VISIBLE;
+
+ box = next_box;
+
+ if (box->style && css_computed_visibility(box->style) ==
+ CSS_VISIBILITY_HIDDEN)
+ continue;
+
+ if (box->object)
+ object = box->object;
+
+ if (box->href) {
+ url = box->href;
+ target = box->target;
+ url_box = box;
+ }
+
+ if (box->usemap) {
+ url = imagemap_get(content, box->usemap,
+ box_x, box_y, x, y, &target);
+ if (url) {
+ imagemap = true;
+ url_box = box;
+ }
+ }
+
+ if (box->gadget) {
+ gadget_content = content;
+ gadget = box->gadget;
+ gadget_box = box;
+ gadget_box_x = box_x;
+ gadget_box_y = box_y;
+ if (gadget->form)
+ target = gadget->form->target;
+ }
+
+ if (box->title)
+ title = box->title;
+
+ pointer = get_pointer_shape(bw, box, false);
+
+ if (box->style)
+ overflow = css_computed_overflow(box->style);
+
+ if ((box->scroll_x != NULL || box->scroll_y != NULL) &&
+ drag_candidate == NULL)
+ drag_candidate = box;
+
+ if (box->scroll_y != NULL || box->scroll_x != NULL) {
+ padding_left = box_x + scroll_get_offset(box->scroll_x);
+ padding_right = padding_left + box->padding[LEFT] +
+ box->width + box->padding[RIGHT];
+ padding_top = box_y + scroll_get_offset(box->scroll_y);
+ padding_bottom = padding_top + box->padding[TOP] +
+ box->height + box->padding[BOTTOM];
+
+ if (x > padding_left && x < padding_right &&
+ y > padding_top && y < padding_bottom) {
+ /* mouse inside padding box */
+
+ if (box->scroll_y != NULL && x > padding_right -
+ SCROLLBAR_WIDTH) {
+ /* mouse above vertical box scroll */
+
+ scroll = box->scroll_y;
+ scroll_mouse_x = x - (padding_right -
+ SCROLLBAR_WIDTH);
+ scroll_mouse_y = y - padding_top;
+ break;
+
+ } else if (box->scroll_x != NULL &&
+ y > padding_bottom -
+ SCROLLBAR_WIDTH) {
+ /* mouse above horizontal box scroll */
+
+ scroll = box->scroll_x;
+ scroll_mouse_x = x - padding_left;
+ scroll_mouse_y = y - (padding_bottom -
+ SCROLLBAR_WIDTH);
+ break;
+ }
+ }
+ }
+
+ if (box->text && !box->object) {
+ text_box = box;
+ text_box_x = box_x;
+ }
+ }
+
+ /* use of box_x, box_y, or content below this point is probably a
+ * mistake; they will refer to the last box returned by box_at_point */
+
+ if (scroll) {
+ status = scroll_mouse_action(scroll, mouse,
+ scroll_mouse_x, scroll_mouse_y);
+ pointer = GUI_POINTER_DEFAULT;
+ } else if (gadget) {
+ switch (gadget->type) {
+ case GADGET_SELECT:
+ status = messages_get("FormSelect");
+ pointer = GUI_POINTER_MENU;
+ if (mouse & BROWSER_MOUSE_CLICK_1 &&
+ option_core_select_menu) {
+ bw->visible_select_menu = gadget;
+ form_open_select_menu(bw, gadget,
+ form_select_menu_callback,
+ bw);
+ pointer = GUI_POINTER_DEFAULT;
+ } else if (mouse & BROWSER_MOUSE_CLICK_1)
+ gui_create_form_select_menu(bw, gadget);
+ break;
+ case GADGET_CHECKBOX:
+ status = messages_get("FormCheckbox");
+ if (mouse & BROWSER_MOUSE_CLICK_1) {
+ gadget->selected = !gadget->selected;
+ html_redraw_a_box(gadget_content, gadget_box);
+ }
+ break;
+ case GADGET_RADIO:
+ status = messages_get("FormRadio");
+ if (mouse & BROWSER_MOUSE_CLICK_1)
+ form_radio_set(gadget_content, gadget);
+ break;
+ case GADGET_IMAGE:
+ if (mouse & BROWSER_MOUSE_CLICK_1) {
+ gadget->data.image.mx = x - gadget_box_x;
+ gadget->data.image.my = y - gadget_box_y;
+ }
+ /* drop through */
+ case GADGET_SUBMIT:
+ if (gadget->form) {
+ snprintf(status_buffer, sizeof status_buffer,
+ messages_get("FormSubmit"),
+ gadget->form->action);
+ status = status_buffer;
+ pointer = get_pointer_shape(bw, gadget_box,
+ false);
+ if (mouse & (BROWSER_MOUSE_CLICK_1 |
+ BROWSER_MOUSE_CLICK_2))
+ action = ACTION_SUBMIT;
+ } else {
+ status = messages_get("FormBadSubmit");
+ }
+ break;
+ case GADGET_TEXTAREA:
+ status = messages_get("FormTextarea");
+ pointer = get_pointer_shape(bw, gadget_box, false);
+
+ if (mouse & (BROWSER_MOUSE_PRESS_1 |
+ BROWSER_MOUSE_PRESS_2)) {
+ if (text_box && selection_root(bw->sel) !=
+ gadget_box)
+ selection_init(bw->sel, gadget_box);
+
+ browser_window_textarea_click(bw,
+ mouse,
+ gadget_box,
+ gadget_box_x,
+ gadget_box_y,
+ x - gadget_box_x,
+ y - gadget_box_y);
+ }
+
+ if (text_box) {
+ int pixel_offset;
+ size_t idx;
+
+ font_plot_style_from_css(text_box->style,
+ &fstyle);
+
+ nsfont.font_position_in_string(&fstyle,
+ text_box->text,
+ text_box->length,
+ x - gadget_box_x - text_box->x,
+ &idx,
+ &pixel_offset);
+
+ selection_click(bw->sel, mouse,
+ text_box->byte_offset + idx);
+
+ if (selection_dragging(bw->sel)) {
+ bw->drag_type = DRAGGING_SELECTION;
+ status = messages_get("Selecting");
+ } else
+ status = content_get_status_message(h);
+ }
+ else if (mouse & BROWSER_MOUSE_PRESS_1)
+ selection_clear(bw->sel, true);
+ break;
+ case GADGET_TEXTBOX:
+ case GADGET_PASSWORD:
+ status = messages_get("FormTextbox");
+ pointer = get_pointer_shape(bw, gadget_box, false);
+
+ if ((mouse & BROWSER_MOUSE_PRESS_1) &&
+ !(mouse & (BROWSER_MOUSE_MOD_1 |
+ BROWSER_MOUSE_MOD_2))) {
+ browser_window_input_click(bw,
+ gadget_box,
+ gadget_box_x,
+ gadget_box_y,
+ x - gadget_box_x,
+ y - gadget_box_y);
+ }
+ if (text_box) {
+ int pixel_offset;
+ size_t idx;
+
+ if (mouse & (BROWSER_MOUSE_DRAG_1 |
+ BROWSER_MOUSE_DRAG_2))
+ selection_init(bw->sel, gadget_box);
+
+ font_plot_style_from_css(text_box->style,
+ &fstyle);
+
+ nsfont.font_position_in_string(&fstyle,
+ text_box->text,
+ text_box->length,
+ x - gadget_box_x - text_box->x,
+ &idx,
+ &pixel_offset);
+
+ selection_click(bw->sel, mouse,
+ text_box->byte_offset + idx);
+
+ if (selection_dragging(bw->sel))
+ bw->drag_type = DRAGGING_SELECTION;
+ }
+ else if (mouse & BROWSER_MOUSE_PRESS_1)
+ selection_clear(bw->sel, true);
+ break;
+ case GADGET_HIDDEN:
+ /* not possible: no box generated */
+ break;
+ case GADGET_RESET:
+ status = messages_get("FormReset");
+ break;
+ case GADGET_FILE:
+ status = messages_get("FormFile");
+ break;
+ case GADGET_BUTTON:
+ /* This gadget cannot be activated */
+ status = messages_get("FormButton");
+ break;
+ }
+
+ } else if (object && (mouse & BROWSER_MOUSE_MOD_2)) {
+
+ if (mouse & BROWSER_MOUSE_DRAG_2)
+ gui_drag_save_object(GUI_SAVE_OBJECT_NATIVE, object,
+ bw->window);
+ else if (mouse & BROWSER_MOUSE_DRAG_1)
+ gui_drag_save_object(GUI_SAVE_OBJECT_ORIG, object,
+ bw->window);
+
+ /* \todo should have a drag-saving object msg */
+ status = content_get_status_message(h);
+
+ } else if (url) {
+ if (title) {
+ snprintf(status_buffer, sizeof status_buffer, "%s: %s",
+ url, title);
+ status = status_buffer;
+ } else
+ status = url;
+
+ pointer = get_pointer_shape(bw, url_box, imagemap);
+
+ if (mouse & BROWSER_MOUSE_CLICK_1 &&
+ mouse & BROWSER_MOUSE_MOD_1) {
+ /* force download of link */
+ browser_window_go_post(bw, url, 0, 0, false,
+ content_get_url(h), true, true, 0);
+ } else if (mouse & BROWSER_MOUSE_CLICK_2 &&
+ mouse & BROWSER_MOUSE_MOD_1) {
+ gui_window_save_link(bw->window, url, title);
+ } else if (mouse & (BROWSER_MOUSE_CLICK_1 |
+ BROWSER_MOUSE_CLICK_2))
+ action = ACTION_GO;
+
+ } else {
+ bool done = false;
+
+ /* frame resizing */
+ if (bw->parent) {
+ struct browser_window *parent;
+ for (parent = bw->parent; parent->parent;
+ parent = parent->parent);
+ browser_window_resize_frames(parent, mouse,
+ x + bw->x0, y + bw->y0,
+ &pointer, &status, &done);
+ }
+
+ /* if clicking in the main page, remove the selection from any
+ * text areas */
+ if (!done) {
+ struct box *layout = html_get_box_tree(h);
+
+ if (text_box &&
+ (mouse & (BROWSER_MOUSE_CLICK_1 |
+ BROWSER_MOUSE_CLICK_2)) &&
+ selection_root(bw->sel) != layout)
+ selection_init(bw->sel, layout);
+
+ if (text_box) {
+ int pixel_offset;
+ size_t idx;
+
+ font_plot_style_from_css(text_box->style,
+ &fstyle);
+
+ nsfont.font_position_in_string(&fstyle,
+ text_box->text,
+ text_box->length,
+ x - text_box_x,
+ &idx,
+ &pixel_offset);
+
+ if (selection_click(bw->sel, mouse,
+ text_box->byte_offset + idx)) {
+ /* key presses must be directed at the
+ * main browser window, paste text
+ * operations ignored */
+
+ if (selection_dragging(bw->sel)) {
+ bw->drag_type =
+ DRAGGING_SELECTION;
+ status =
+ messages_get("Selecting");
+ } else
+ status = content_get_status_message(h);
+
+ done = true;
+ }
+ }
+ else if (mouse & BROWSER_MOUSE_PRESS_1)
+ selection_clear(bw->sel, true);
+ }
+
+ if (!done) {
+ if (title)
+ status = title;
+ else if (bw->loading_content)
+ status = content_get_status_message(
+ bw->loading_content);
+ else
+ status = content_get_status_message(h);
+
+ if (mouse & BROWSER_MOUSE_DRAG_1) {
+ if (mouse & BROWSER_MOUSE_MOD_2) {
+ gui_drag_save_object(GUI_SAVE_COMPLETE,
+ h, bw->window);
+ } else {
+ if (drag_candidate == NULL)
+ browser_window_page_drag_start(
+ bw, x, y);
+ else {
+ html_box_drag_start(
+ drag_candidate,
+ x, y);
+ }
+ pointer = GUI_POINTER_MOVE;
+ }
+ }
+ else if (mouse & BROWSER_MOUSE_DRAG_2) {
+ if (mouse & BROWSER_MOUSE_MOD_2) {
+ gui_drag_save_object(GUI_SAVE_SOURCE,
+ h, bw->window);
+ } else {
+ if (drag_candidate == NULL)
+ browser_window_page_drag_start(
+ bw, x, y);
+ else {
+ html_box_drag_start(
+ drag_candidate,
+ x, y);
+ }
+ pointer = GUI_POINTER_MOVE;
+ }
+ }
+ }
+ if ((mouse & BROWSER_MOUSE_CLICK_1) &&
+ !selection_defined(bw->sel)) {
+ /* ensure key presses still act on the browser window */
+ browser_window_remove_caret(bw);
+ }
+ }
+
+
+ if (action == ACTION_SUBMIT || action == ACTION_GO)
+ bw->last_action = wallclock();
+
+ if (status != NULL)
+ browser_window_set_status(bw, status);
+
+ browser_window_set_pointer(bw->window, pointer);
+
+ /* deferred actions that can cause this browser_window to be destroyed
+ * and must therefore be done after set_status/pointer
+ */
+ switch (action) {
+ case ACTION_SUBMIT:
+ form_submit(bw->current_content,
+ browser_window_find_target(bw, target, mouse),
+ gadget->form, gadget);
+ break;
+ case ACTION_GO:
+ browser_window_go(browser_window_find_target(bw, target, mouse),
+ url, content_get_url(h), true);
+ break;
+ case ACTION_NONE:
+ break;
+ }
+}
+
+
+gui_pointer_shape get_pointer_shape(struct browser_window *bw, struct box *box,
+ bool imagemap)
+{
+ gui_pointer_shape pointer;
+ css_computed_style *style;
+ enum css_cursor_e cursor;
+ lwc_string **cursor_uris;
+ bool loading;
+
+ assert(bw);
+
+ loading = (bw->loading_content != NULL || (bw->current_content &&
+ content_get_status(bw->current_content) ==
+ CONTENT_STATUS_READY));
+
+ if (wallclock() - bw->last_action < 100 && loading)
+ /* If less than 1 second since last link followed, show
+ * progress indicating pointer and we're loading something */
+ return GUI_POINTER_PROGRESS;
+
+ if (box->type == BOX_FLOAT_LEFT || box->type == BOX_FLOAT_RIGHT)
+ style = box->children->style;
+ else
+ style = box->style;
+
+ if (style == NULL)
+ return GUI_POINTER_DEFAULT;
+
+ cursor = css_computed_cursor(style, &cursor_uris);
+
+ switch (cursor) {
+ case CSS_CURSOR_AUTO:
+ if (box->href || (box->gadget &&
+ (box->gadget->type == GADGET_IMAGE ||
+ box->gadget->type == GADGET_SUBMIT)) ||
+ imagemap) {
+ /* link */
+ pointer = GUI_POINTER_POINT;
+ } else if (box->gadget &&
+ (box->gadget->type == GADGET_TEXTBOX ||
+ box->gadget->type == GADGET_PASSWORD ||
+ box->gadget->type == GADGET_TEXTAREA)) {
+ /* text input */
+ pointer = GUI_POINTER_CARET;
+ } else {
+ /* anything else */
+ if (loading) {
+ /* loading new content */
+ pointer = GUI_POINTER_PROGRESS;
+ } else {
+ pointer = GUI_POINTER_DEFAULT;
+ }
+ }
+ break;
+ case CSS_CURSOR_CROSSHAIR:
+ pointer = GUI_POINTER_CROSS;
+ break;
+ case CSS_CURSOR_POINTER:
+ pointer = GUI_POINTER_POINT;
+ break;
+ case CSS_CURSOR_MOVE:
+ pointer = GUI_POINTER_MOVE;
+ break;
+ case CSS_CURSOR_E_RESIZE:
+ pointer = GUI_POINTER_RIGHT;
+ break;
+ case CSS_CURSOR_W_RESIZE:
+ pointer = GUI_POINTER_LEFT;
+ break;
+ case CSS_CURSOR_N_RESIZE:
+ pointer = GUI_POINTER_UP;
+ break;
+ case CSS_CURSOR_S_RESIZE:
+ pointer = GUI_POINTER_DOWN;
+ break;
+ case CSS_CURSOR_NE_RESIZE:
+ pointer = GUI_POINTER_RU;
+ break;
+ case CSS_CURSOR_SW_RESIZE:
+ pointer = GUI_POINTER_LD;
+ break;
+ case CSS_CURSOR_SE_RESIZE:
+ pointer = GUI_POINTER_RD;
+ break;
+ case CSS_CURSOR_NW_RESIZE:
+ pointer = GUI_POINTER_LU;
+ break;
+ case CSS_CURSOR_TEXT:
+ pointer = GUI_POINTER_CARET;
+ break;
+ case CSS_CURSOR_WAIT:
+ pointer = GUI_POINTER_WAIT;
+ break;
+ case CSS_CURSOR_PROGRESS:
+ pointer = GUI_POINTER_PROGRESS;
+ break;
+ case CSS_CURSOR_HELP:
+ pointer = GUI_POINTER_HELP;
+ break;
+ default:
+ pointer = GUI_POINTER_DEFAULT;
+ break;
+ }
+
+ return pointer;
+}
+
+
+/**
+ * Callback for in-page scrolls.
+ */
+void html_overflow_scroll_callback(void *client_data,
+ struct scroll_msg_data *scroll_data)
+{
+ struct browser_scroll_data *data = client_data;
+ struct browser_window *bw = data->bw;
+ struct box *box = data->box;
+ int x, y, box_x, box_y, diff_x, diff_y;
+
+
+ switch(scroll_data->msg) {
+ case SCROLL_MSG_REDRAW:
+ diff_x = box->padding[LEFT] + box->width +
+ box->padding[RIGHT] - SCROLLBAR_WIDTH;
+ diff_y = box->padding[TOP] + box->height +
+ box->padding[BOTTOM] - SCROLLBAR_WIDTH;
+
+ box_coords(box, &box_x, &box_y);
+ if (scroll_is_horizontal(scroll_data->scroll)) {
+ x = box_x + scroll_get_offset(box->scroll_x);
+ y = box_y + scroll_get_offset(box->scroll_y) +
+ diff_y;
+ } else {
+ x = box_x + scroll_get_offset(box->scroll_x) +
+ diff_x;
+ y = box_y + scroll_get_offset(box->scroll_y);
+ }
+ browser_window_redraw_rect(bw,
+ x + scroll_data->x0,
+ y + scroll_data->y0,
+ scroll_data->x1 - scroll_data->x0,
+ scroll_data->y1 - scroll_data->y0);
+ break;
+ case SCROLL_MSG_MOVED:
+ html_redraw_a_box(bw->current_content, box);
+ break;
+ case SCROLL_MSG_SCROLL_START:
+ bw->scroll = scroll_data->scroll;
+ gui_window_box_scroll_start(bw->window,
+ scroll_data->x0, scroll_data->y0,
+ scroll_data->x1, scroll_data->y1);
+ break;
+ case SCROLL_MSG_SCROLL_FINISHED:
+ bw->scroll = NULL;
+
+ browser_window_set_pointer(bw->window,
+ GUI_POINTER_DEFAULT);
+ break;
+ }
+}
+
+
+/**
+ * End overflow scroll scrollbar drags
+ *
+ * \param scroll scrollbar widget
+ * \param mouse state of mouse buttons and modifier keys
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ */
+void html_overflow_scroll_drag_end(struct scroll *scroll,
+ browser_mouse_state mouse, int x, int y)
+{
+ int scroll_mouse_x, scroll_mouse_y, box_x, box_y;
+ struct browser_scroll_data *data = scroll_get_data(scroll);
+ struct box *box;
+
+ box = data->box;
+ box_coords(box, &box_x, &box_y);
+
+ if (scroll_is_horizontal(scroll)) {
+ scroll_mouse_x = x - box_x;
+ scroll_mouse_y = y - (box_y + box->padding[TOP] +
+ box->height + box->padding[BOTTOM] -
+ SCROLLBAR_WIDTH);
+ scroll_mouse_drag_end(scroll, mouse,
+ scroll_mouse_x, scroll_mouse_y);
+ } else {
+ scroll_mouse_x = x - (box_x + box->padding[LEFT] +
+ box->width + box->padding[RIGHT] -
+ SCROLLBAR_WIDTH);
+ scroll_mouse_y = y - box_y;
+ scroll_mouse_drag_end(scroll, mouse,
+ scroll_mouse_x, scroll_mouse_y);
+ }
+}
+
+
+/**
+ * End overflow scroll scrollbar drags
+ *
+ * \param h html content's high level cache entry
+ * \param mouse state of mouse buttons and modifier keys
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ */
+size_t html_selection_drag_end(hlcache_handle *h, browser_mouse_state mouse,
+ int x, int y, int dir)
+{
+ int pixel_offset;
+ struct box *box;
+ int dx, dy;
+ int idx = 0;
+
+ box = box_pick_text_box(h, x, y, dir, &dx, &dy);
+ if (box) {
+ plot_font_style_t fstyle;
+
+ font_plot_style_from_css(box->style, &fstyle);
+
+ nsfont.font_position_in_string(&fstyle, box->text, box->length,
+ dx, &idx, &pixel_offset);
+
+ idx += box->byte_offset;
+ }
+
+ return idx;
+}
+
+
+/**
+ * Start drag scrolling the contents of a box
+ *
+ * \param box the box to be scrolled
+ * \param x x ordinate of initial mouse position
+ * \param y y ordinate
+ */
+
+void html_box_drag_start(struct box *box, int x, int y)
+{
+ int box_x, box_y, scroll_mouse_x, scroll_mouse_y;
+
+ box_coords(box, &box_x, &box_y);
+
+ if (box->scroll_x != NULL) {
+ scroll_mouse_x = x - box_x ;
+ scroll_mouse_y = y - (box_y + box->padding[TOP] +
+ box->height + box->padding[BOTTOM] -
+ SCROLLBAR_WIDTH);
+ scroll_start_content_drag(box->scroll_x,
+ scroll_mouse_x, scroll_mouse_y);
+ } else if (box->scroll_y != NULL) {
+ scroll_mouse_x = x - (box_x + box->padding[LEFT] +
+ box->width + box->padding[RIGHT] -
+ SCROLLBAR_WIDTH);
+ scroll_mouse_y = y - box_y;
+
+ scroll_start_content_drag(box->scroll_y,
+ scroll_mouse_x, scroll_mouse_y);
+ }
+}
diff --git a/render/textplain.c b/render/textplain.c
index f39a89a08..94a5cce66 100644
--- a/render/textplain.c
+++ b/render/textplain.c
@@ -32,6 +32,7 @@
#include "content/hlcache.h"
#include "css/css.h"
#include "css/utils.h"
+#include "desktop/browser.h"
#include "desktop/gui.h"
#include "desktop/options.h"
#include "desktop/plotters.h"
@@ -355,6 +356,93 @@ bool textplain_clone(const struct content *old, struct content *new_content)
/**
+ * Handle mouse tracking (including drags) in a TEXTPLAIN content window.
+ *
+ * \param c content of type textplain
+ * \param bw browser window
+ * \param mouse state of mouse buttons and modifier keys
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ */
+
+void textplain_mouse_track(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y)
+{
+ switch (bw->drag_type) {
+
+ case DRAGGING_SELECTION: {
+ hlcache_handle *h = bw->current_content;
+ int dir = -1;
+ size_t idx;
+
+ if (selection_dragging_start(bw->sel)) dir = 1;
+
+ idx = textplain_offset_from_coords(h, x, y, dir);
+ selection_track(bw->sel, mouse, idx);
+ }
+ break;
+
+ default:
+ textplain_mouse_action(c, bw, mouse, x, y);
+ break;
+ }
+}
+
+
+/**
+ * Handle mouse clicks and movements in a TEXTPLAIN content window.
+ *
+ * \param c content of type textplain
+ * \param bw browser window
+ * \param click type of mouse click
+ * \param x coordinate of mouse
+ * \param y coordinate of mouse
+ */
+
+void textplain_mouse_action(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y)
+{
+ hlcache_handle *h = bw->current_content;
+ gui_pointer_shape pointer = GUI_POINTER_DEFAULT;
+ const char *status = 0;
+ size_t idx;
+ int dir = 0;
+
+ bw->drag_type = DRAGGING_NONE;
+
+ if (!bw->sel) return;
+
+ idx = textplain_offset_from_coords(h, x, y, dir);
+ if (selection_click(bw->sel, mouse, idx)) {
+
+ if (selection_dragging(bw->sel)) {
+ bw->drag_type = DRAGGING_SELECTION;
+ status = messages_get("Selecting");
+ }
+ else
+ status = content_get_status_message(h);
+ }
+ else {
+ if (bw->loading_content)
+ status = content_get_status_message(
+ bw->loading_content);
+ else
+ status = content_get_status_message(h);
+
+ if (mouse & (BROWSER_MOUSE_DRAG_1 | BROWSER_MOUSE_DRAG_2)) {
+ browser_window_page_drag_start(bw, x, y);
+ pointer = GUI_POINTER_MOVE;
+ }
+ }
+
+ assert(status);
+
+ browser_window_set_status(bw, status);
+ browser_window_set_pointer(bw->window, pointer);
+}
+
+
+/**
* Draw a CONTENT_TEXTPLAIN using the current set of plotters (plot).
*
* \param c content of type CONTENT_TEXTPLAIN
diff --git a/render/textplain.h b/render/textplain.h
index 61a1c0c9a..2a80f1619 100644
--- a/render/textplain.h
+++ b/render/textplain.h
@@ -26,6 +26,7 @@
#include <stddef.h>
#include <iconv.h>
+#include "desktop/mouse.h"
struct content;
struct hlcache_handle;
@@ -52,6 +53,10 @@ bool textplain_create(struct content *c, const struct http_parameter *params);
bool textplain_process_data(struct content *c,
const char *data, unsigned int size);
bool textplain_convert(struct content *c);
+void textplain_mouse_track(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y);
+void textplain_mouse_action(struct content *c, struct browser_window *bw,
+ browser_mouse_state mouse, int x, int y);
void textplain_reformat(struct content *c, int width, int height);
void textplain_destroy(struct content *c);
bool textplain_redraw(struct content *c, int x, int y,