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authorJames Bursa <james@netsurf-browser.org>2003-09-22 21:55:08 +0000
committerJames Bursa <james@netsurf-browser.org>2003-09-22 21:55:08 +0000
commit287986b28a9290cc46ef585bfcc47782ea55cc70 (patch)
tree823a3a953c97e8f9bb8f6dd8b1847fe456cb4d44 /desktop/browser.c
parent84dd766141745dbf06567c309f1d7099e0996d57 (diff)
downloadnetsurf-287986b28a9290cc46ef585bfcc47782ea55cc70.tar.gz
netsurf-287986b28a9290cc46ef585bfcc47782ea55cc70.tar.bz2
[project @ 2003-09-22 21:55:08 by bursa]
Experimental textarea editing code. svn path=/import/netsurf/; revision=309
Diffstat (limited to 'desktop/browser.c')
-rw-r--r--desktop/browser.c170
1 files changed, 167 insertions, 3 deletions
diff --git a/desktop/browser.c b/desktop/browser.c
index f258d252e..86c1cac45 100644
--- a/desktop/browser.c
+++ b/desktop/browser.c
@@ -45,6 +45,13 @@ static int browser_window_gadget_click(struct browser_window* bw, unsigned long
static void browser_form_submit(struct browser_window *bw, struct form *form);
static char* browser_form_construct_get(struct page_elements *elements, struct formsubmit* fs);
static void browser_form_get_append(char **s, int *length, char sep, char *name, char *value);
+static void browser_window_textarea_click(struct browser_window* bw,
+ unsigned long actual_x, unsigned long actual_y,
+ unsigned long x, unsigned long y,
+ struct box *box);
+static void browser_window_textarea_callback(struct browser_window *bw, char key, void *p);
+static void browser_window_place_caret(struct browser_window *bw, int x, int y,
+ int height, void (*callback)(struct browser_window *bw, char key, void *p), void *p);
void browser_window_start_throbber(struct browser_window* bw)
@@ -167,6 +174,7 @@ struct browser_window* create_browser_window(int flags, int width, int height)
bw->history = NULL;
bw->url = NULL;
+ bw->caret_callback = 0;
bw->window = gui_create_browser_window(bw);
@@ -323,6 +331,7 @@ void browser_window_callback(content_msg msg, struct content *c,
}
bw->current_content = c;
bw->loading_content = 0;
+ bw->caret_callback = 0;
}
gui_window_set_redraw_safety(bw->window, previous_safety);
if (bw->current_content->status == CONTENT_STATUS_DONE) {
@@ -493,7 +502,7 @@ int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x
for (i = found - 1; i >= 0; i--)
{
- if (click_boxes[i].box->type == BOX_INLINE && click_boxes[i].box->gadget != 0)
+ if (click_boxes[i].box->gadget)
{
struct gui_gadget* g = click_boxes[i].box->gadget;
@@ -522,7 +531,12 @@ int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x
gui_redraw_gadget(bw,g);
break;
case GADGET_TEXTAREA:
- gui_edit_textarea(bw, g);
+ browser_window_textarea_click(bw,
+ click_boxes[i].actual_x,
+ click_boxes[i].actual_y,
+ click_x - click_boxes[i].actual_x,
+ click_y - click_boxes[i].actual_y,
+ click_boxes[i].box);
break;
case GADGET_TEXTBOX:
gui_edit_textbox(bw, g);
@@ -548,6 +562,156 @@ int browser_window_gadget_click(struct browser_window* bw, unsigned long click_x
return 0;
}
+
+/**
+ * Handle clicks in a text area by placing the caret.
+ */
+
+void browser_window_textarea_click(struct browser_window* bw,
+ unsigned long actual_x, unsigned long actual_y,
+ unsigned long x, unsigned long y,
+ struct box *textarea)
+{
+ /* a textarea contains one or more inline containers, which contain
+ * the formatted paragraphs of text as inline boxes */
+
+ int char_offset, pixel_offset;
+ struct box *inline_container, *text_box;
+
+ for (inline_container = textarea->children;
+ inline_container && inline_container->y + inline_container->height < y;
+ inline_container = inline_container->next)
+ ;
+ if (!inline_container) {
+ /* below the bottom of the textarea: place caret at end */
+ inline_container = textarea->last;
+ text_box = inline_container->last;
+ assert(text_box->type == BOX_INLINE);
+ assert(text_box->text && text_box->font);
+ font_position_in_string(text_box->text, text_box->font,
+ text_box->length, textarea->width,
+ &char_offset, &pixel_offset);
+ } else {
+ /* find the relevant text box */
+ y -= inline_container->y;
+ for (text_box = inline_container->children;
+ text_box && (text_box->y + text_box->height < y ||
+ text_box->x + text_box->width < x);
+ text_box = text_box->next)
+ ;
+ if (!text_box) {
+ /* past last text box */
+ text_box = inline_container->last;
+ assert(text_box->type == BOX_INLINE);
+ assert(text_box->text && text_box->font);
+ font_position_in_string(text_box->text, text_box->font,
+ text_box->length, textarea->width,
+ &char_offset, &pixel_offset);
+ } else {
+ /* in a text box */
+ assert(text_box->type == BOX_INLINE);
+ assert(text_box->text && text_box->font);
+ font_position_in_string(text_box->text, text_box->font,
+ text_box->length, x - text_box->x,
+ &char_offset, &pixel_offset);
+ }
+ }
+ textarea->gadget->data.textarea.caret_inline_container = inline_container;
+ textarea->gadget->data.textarea.caret_text_box = text_box;
+ textarea->gadget->data.textarea.caret_char_offset = char_offset;
+ browser_window_place_caret(bw, actual_x + text_box->x + pixel_offset,
+ actual_y + inline_container->y + text_box->y,
+ text_box->height,
+ browser_window_textarea_callback, textarea);
+}
+
+
+/**
+ * Key press callback for text areas.
+ */
+
+void browser_window_textarea_callback(struct browser_window *bw, char key, void *p)
+{
+ struct box *textarea = p;
+ struct box *inline_container = textarea->gadget->data.textarea.caret_inline_container;
+ struct box *text_box = textarea->gadget->data.textarea.caret_text_box;
+ int char_offset = textarea->gadget->data.textarea.caret_char_offset;
+ int pixel_offset;
+ unsigned long actual_x, actual_y;
+ unsigned long width, height;
+
+ box_coords(textarea, &actual_x, &actual_y);
+
+ if (32 <= key && key != 127) {
+ /* normal character insertion */
+ text_box->text = xrealloc(text_box->text, text_box->length + 2);
+ memmove(text_box->text + char_offset + 1,
+ text_box->text + char_offset,
+ text_box->length - char_offset);
+ text_box->text[char_offset] = key;
+ text_box->length++;
+ text_box->text[text_box->length] = 0;
+ text_box->width = UNKNOWN_WIDTH;
+ char_offset++;
+ } else {
+ return;
+ }
+
+ /* reflow textarea preserving width and height */
+ width = textarea->width;
+ height = textarea->height;
+ layout_block(textarea, textarea->parent->width, textarea, 0, 0);
+ textarea->width = width;
+ textarea->height = height;
+
+ if (text_box->length < char_offset) {
+ /* the text box has been split and the caret is in the second part */
+ char_offset -= text_box->length;
+ text_box = text_box->next;
+ }
+
+ pixel_offset = font_width(text_box->font, text_box->text, char_offset);
+
+ textarea->gadget->data.textarea.caret_text_box = text_box;
+ textarea->gadget->data.textarea.caret_char_offset = char_offset;
+ browser_window_place_caret(bw, actual_x + text_box->x + pixel_offset,
+ actual_y + inline_container->y + text_box->y,
+ text_box->height,
+ browser_window_textarea_callback, textarea);
+
+ gui_window_redraw(bw->window,
+ actual_x,
+ actual_y + inline_container->y,
+ actual_x + width,
+ actual_y + height);
+}
+
+
+/**
+ * Position the caret and assign a callback for key presses.
+ */
+
+void browser_window_place_caret(struct browser_window *bw, int x, int y,
+ int height, void (*callback)(struct browser_window *bw, char key, void *p), void *p)
+{
+ gui_window_place_caret(bw->window, x, y, height);
+ bw->caret_callback = callback;
+ bw->caret_p = p;
+}
+
+
+/**
+ * Handle key presses in a browser window.
+ */
+
+void browser_window_key_press(struct browser_window *bw, char key)
+{
+ if (!bw->caret_callback)
+ return;
+ bw->caret_callback(bw, key, bw->caret_p);
+}
+
+
int browser_window_action(struct browser_window* bw, struct browser_action* act)
{
switch (act->type)
@@ -1062,7 +1226,7 @@ char* browser_form_construct_get(struct page_elements *elements, struct formsubm
opt = opt->next;
}
break;
- case GADGET_TEXTAREA: value = elements->gadgets[i]->data.textarea.text;
+ case GADGET_TEXTAREA: /* TODO */
break;
case GADGET_IMAGE: sprintf(elements->gadgets[i]->data.image.name,
"%s.x",