void browser_window_recalculate_iframes(struct browser_window *bw)
{
struct browser_window *window;
int index;
for (index = 0; index < bw->iframe_count; index++) {
window = &(bw->iframes[index]);
if (window != NULL) {
browser_window_handle_scrollbars(window);
}
}
}
void browser_window_recalculate_frameset(struct browser_window *bw)
{
int widths[bw->cols][bw->rows];
int heights[bw->cols][bw->rows];
int bw_width, bw_height;
int avail_width, avail_height;
int row, row2, col, index;
struct browser_window *window;
float relative;
int size, extent, applied;
int x, y;
int new_width, new_height;
assert(bw);
/* window dimensions */
if (!bw->parent) {
browser_window_get_dimensions(bw, &bw_width, &bw_height, true);
bw->x = 0;
bw->y = 0;
bw->width = bw_width;
bw->height = bw_height;
} else {
bw_width = bw->width;
bw_height = bw->height;
}
bw_width++;
bw_height++;
/* widths */
for (row = 0; row < bw->rows; row++) {
avail_width = bw_width;
relative = 0;
for (col = 0; col < bw->cols; col++) {
index = (row * bw->cols) + col;
window = &bw->children[index];
switch (window->frame_width.unit) {
case FRAME_DIMENSION_PIXELS:
widths[col][row] = window->frame_width.value *
window->scale;
if (window->border) {
if (col != 0)
widths[col][row] += 1;
if (col != bw->cols - 1)
widths[col][row] += 1;
}
break;
case FRAME_DIMENSION_PERCENT:
widths[col][row] = bw_width *
window->frame_width.value / 100;
break;
case FRAME_DIMENSION_RELATIVE:
widths[col][row] = 0;
relative += window->frame_width.value;
break;
default:
/* unknown frame dimension unit */
assert(window->frame_width.unit ==
FRAME_DIMENSION_PIXELS ||
window->frame_width.unit ==
FRAME_DIMENSION_PERCENT ||
window->frame_width.unit ==
FRAME_DIMENSION_RELATIVE);
break;
}
avail_width -= widths[col][row];
}
/* Redistribute to fit window */
if ((relative > 0) && (avail_width > 0)) {
/* Expand the relative sections to fill remainder */
for (col = 0; col < bw->cols; col++) {
index = (row * bw->cols) + col;
window = &bw->children[index];
if (window->frame_width.unit ==
FRAME_DIMENSION_RELATIVE) {
size = avail_width * window->
frame_width.value /
relative;
avail_width -= size;
relative -= window->frame_width.value;
widths[col][row] += size;
}
}
} else if (bw_width != avail_width) {
/* proportionally distribute error */
extent = avail_width;
applied = 0;
for (col = 0; col < bw->cols; col++) {
if (col == bw->cols - 1) {
/* Last cell, use up remainder */
widths[col][row] += extent - applied;
widths[col][row] =
widths[col][row] < 0 ?
0 : widths[col][row];
} else {
/* Find size of cell adjustment */
size = (widths[col][row] * extent) /
(bw_width - extent);
/* Modify cell */
widths[col][row] += size;
applied += size;
}
}
}
}
/* heights */
for (col = 0; col < bw->cols; col++) {
avail_height = bw_height;
relative = 0;
for (row = 0; row < bw->rows; row++) {
index = (row * bw->cols) + col;
window = &bw->children[index];
switch (window->frame_height.unit) {
case FRAME_DIMENSION_PIXELS:
heights[col][row] = window->frame_height.value *
window->scale;
if (window->border) {
if (row != 0)
heights[col][row] += 1;
if (row != bw->rows - 1)
heights[col][row] += 1;
}
break;
case FRAME_DIMENSION_PERCENT:
heights[col][row] = bw_height *
window->frame_height.value / 100;
break;
case FRAME_DIMENSION_RELATIVE:
heights[col][row] = 0;
relative += window->frame_height.value;
break;
default:
/* unknown frame dimension unit */
assert(window->frame_height.unit ==
FRAME_DIMENSION_PIXELS ||
window->frame_height.unit ==
FRAME_DIMENSION_PERCENT ||
window->frame_height.unit ==
FRAME_DIMENSION_RELATIVE);
break;
}
avail_height -= heights[col][row];
}
if (avail_height == 0)
continue;
/* Redistribute to fit window */
if ((relative > 0) && (avail_height > 0)) {
/* Expand the relative sections to fill remainder */
for (row = 0; row < bw->rows; row++) {
index = (row * bw->cols) + col;
window = &bw->children[index];
if (window->frame_height.unit ==
FRAME_DIMENSION_RELATIVE) {
size = avail_height * window->
frame_height.value /
relative;
avail_height -= size;
relative -= window->frame_height.value;
heights[col][row] += size;
}
}
} else if (bw_height != avail_height) {
/* proportionally distribute error */
extent = avail_height;
applied = 0;
for (row = 0; row < bw->rows; row++) {
if (row == bw->rows - 1) {
/* Last cell, use up remainder */
heights[col][row] += extent - applied;
heights[col][row] =
heights[col][row] < 0 ?
0 : heights[col][row];
} else {
/* Find size of cell adjustment */
size = (heights[col][row] * extent) /
(bw_height - extent);
/* Modify cell */
heights[col][row] += size;
applied += size;
}
}
}
}
/* position frames and calculate children */
for (row = 0; row < bw->rows; row++) {
x = 0;
for (col = 0; col < bw->cols; col++) {
index = (row * bw->cols) + col;
window = &bw->children[index];
y = 0;
for (row2 = 0; row2 < row; row2++)
y+= heights[col][row2];
window->x = x;
window->y = y;
new_width = widths[col][row] - 1;
new_height = heights[col][row] - 1;
if (window->width != new_width ||
window->height != new_height) {
/* Change in frame size */
browser_window_reformat(window, false,
new_width * bw->scale,
new_height * bw->scale);
window->width = new_width;
window->height = new_height;
browser_window_handle_scrollbars(window);
}
x += widths[col][row];
if (window->children)
browser_window_recalculate_frameset(window);
}
}
}
/**
* Callback for (i)frame scrollbars.
*/
void browser_window_scroll_callback(void *client_data,
struct scrollbar_msg_data *scrollbar_data)
{
struct browser_window *bw = client_data;
switch(scrollbar_data->msg) {
case SCROLLBAR_MSG_MOVED:
if (bw->browser_window_type == BROWSER_WINDOW_IFRAME) {
html_redraw_a_box(bw->parent->current_content, bw->box);
} else {
struct rect rect;
rect.x0 = scrollbar_get_offset(bw->scroll_x);
rect.y0 = scrollbar_get_offset(bw->scroll_y);
rect.x1 = rect.x0 + bw->width;
rect.y1 = rect.y0 + bw->height;
browser_window_update_box(bw, &rect);
}
break;
case SCROLLBAR_MSG_SCROLL_START:
{
struct rect rect = {
.x0 = scrollbar_data->x0,
.y0 = scrollbar_data->y0,
.x1 = scrollbar_data->x1,
.y1 = scrollbar_data->y1
};
if (scrollbar_is_horizontal(scrollbar_data->scrollbar))
browser_window_set_drag_type(bw, DRAGGING_SCR_X, &rect);
else
browser_window_set_drag_type(bw, DRAGGING_SCR_Y, &rect);
}
break;
case SCROLLBAR_MSG_SCROLL_FINISHED:
browser_window_set_drag_type(bw, DRAGGING_NONE, NULL);
browser_window_set_pointer(bw, BROWSER_POINTER_DEFAULT);
break;
}
}
/* exported interface, documented in browser.h */
void browser_window_handle_scrollbars(struct browser_window *bw)
{
struct hlcache_handle *h = bw->current_content;
bool scroll_x;
bool scroll_y;
int c_width = 0;
int c_height = 0;
assert(!bw->window); /* Core-handled windows only */
if (h != NULL) {
c_width = content_get_width(h);
c_height = content_get_height(h);
}
if (bw->scrolling == BW_SCROLLING_YES) {
scroll_x = true;
scroll_y = true;
} else if (bw->scrolling == BW_SCROLLING_AUTO &&
bw->current_content) {
int bw_width = bw->width;
int bw_height = bw->height;
/* subtract existing scrollbar width */
bw_width -= bw->scroll_y ? SCROLLBAR_WIDTH : 0;
bw_height -= bw->scroll_x ? SCROLLBAR_WIDTH : 0;
scroll_y = (c_height > bw_height) ? true : false;
scroll_x = (c_width > bw_width) ? true : false;
} else {
/* No scrollbars */
scroll_x = false;
scroll_y = false;
}
if (!scroll_x && bw->scroll_x != NULL) {
scrollbar_destroy(bw->scroll_x);
bw->scroll_x = NULL;
}
if (!scroll_y && bw->scroll_y != NULL) {
scrollbar_destroy(bw->scroll_y);
bw->scroll_y = NULL;
}
if (scroll_y) {
int length = bw->height;
int visible = bw->height - (scroll_x ? SCROLLBAR_WIDTH : 0);
if (bw->scroll_y == NULL) {
/* create vertical scrollbar */
if (scrollbar_create(false, length, c_height, visible,
bw, browser_window_scroll_callback,
&(bw->scroll_y)) != NSERROR_OK) {
return;
}
} else {
/* update vertical scrollbar */
scrollbar_set_extents(bw->scroll_y, length,
visible, c_height);
}
}
if (scroll_x) {
int length = bw->width - (scroll_y ? SCROLLBAR_WIDTH : 0);
int visible = length;
if (bw->scroll_x == NULL) {
/* create horizontal scrollbar */
if (scrollbar_create(true, length, c_width, visible,
bw, browser_window_scroll_callback,
&(bw->scroll_x)) != NSERROR_OK) {
return;
}
} else {
/* update horizontal scrollbar */
scrollbar_set_extents(bw->scroll_x, length,
visible, c_width);
}
}
if (scroll_x && scroll_y)
scrollbar_make_pair(bw->scroll_x, bw->scroll_y);
}
/* exported function documented in desktop/frames.h */
nserror browser_window_create_iframes(struct browser_window *bw,
struct content_html_iframe *iframe)
{
struct browser_window *window;
struct content_html_iframe *cur;
struct rect rect;
int iframes = 0;
int index;
nserror ret = NSERROR_OK;
if (iframe == NULL) {
return NSERROR_BAD_PARAMETER;
}
/* Count iframe list and allocate enough space within the
* browser window.
*/
for (cur = iframe; cur; cur = cur->next) {
iframes++;
}
bw->iframes = calloc(iframes, sizeof(*bw));
if (!bw->iframes) {
return NSERROR_NOMEM;
}
bw->iframe_count = iframes;
index = 0;
for (cur = iframe; cur; cur = cur->next) {
window = &(bw->iframes[index++]);
/* Initialise common parts */
browser_window_initialise_common(BW_CREATE_NONE,
window, NULL);
/* window characteristics */
window->browser_window_type = BROWSER_WINDOW_IFRAME;
window->scrolling = cur->scrolling;
window->border = cur->border;
window->border_colour = cur->border_colour;
window->no_resize = true;
window->margin_width = cur->margin_width;
window->margin_height = cur->margin_height;
window->scale = bw->scale;
if (cur->name != NULL) {
window->name = strdup(cur->name);
if (window->name == NULL) {
free(bw->iframes) ;
bw->iframes = 0;
bw->iframe_count = 0;
return NSERROR_NOMEM;
}
}
/* linking */
window->box = cur->box;
window->parent = bw;
window->box->iframe = window;
/* iframe dimensions */
box_bounds(window->box, &rect);
browser_window_set_position(window, rect.x0, rect.y0);
browser_window_set_dimensions(window, rect.x1 - rect.x0,
rect.y1 - rect.y0);
}
/* calculate dimensions */
browser_window_update_extent(bw);
browser_window_recalculate_iframes(bw);
index = 0;
for (cur = iframe; cur; cur = cur->next) {
window = &(bw->iframes[index++]);
if (cur->url) {
/* fetch iframe's content */
ret = browser_window_navigate(window,
cur->url,
hlcache_handle_get_url(bw->current_content),
BW_NAVIGATE_UNVERIFIABLE,
NULL,
NULL,
bw->current_content);
}
}
return ret;
}
/**
* Recalculate iframe positions following a resize.
*
* \param bw The browser window to reposition iframes for
*/
void browser_window_recalculate_iframes(struct browser_window *bw)
{
struct browser_window *window;
int index;
for (index = 0; index < bw->iframe_count; index++) {
window = &(bw->iframes[index]);
if (window != NULL) {
browser_window_handle_scrollbars(window);
}
}
}
/* exported interface documented in desktop/frames.h */
nserror browser_window_create_frameset(struct browser_window *bw,
struct content_html_frames *frameset)
{
int row, col, index;
struct content_html_frames *frame;
struct browser_window *window;
hlcache_handle *parent;
assert(bw && frameset);
/* 1. Create children */
assert(bw->children == NULL);
assert(frameset->cols + frameset->rows != 0);
bw->children = calloc((frameset->cols * frameset->rows), sizeof(*bw));
if (!bw->children) {
return NSERROR_NOMEM;
}
bw->cols = frameset->cols;
bw->rows = frameset->rows;
for (row = 0; row < bw->rows; row++) {
for (col = 0; col < bw->cols; col++) {
index = (row * bw->cols) + col;
frame = &frameset->children[index];
window = &bw->children[index];
/* Initialise common parts */
browser_window_initialise_common(BW_CREATE_NONE,
window, NULL);
/* window characteristics */
if (frame->children)
window->browser_window_type =
BROWSER_WINDOW_FRAMESET;
else
window->browser_window_type =
BROWSER_WINDOW_FRAME;
window->scrolling = frame->scrolling;
window->border = frame->border;
window->border_colour = frame->border_colour;
window->no_resize = frame->no_resize;
window->frame_width = frame->width;
window->frame_height = frame->height;
window->margin_width = frame->margin_width;
window->margin_height = frame->margin_height;
if (frame->name) {
window->name = strdup(frame->name);
if (!window->name) {
free(bw->children);
bw->children = NULL;
return NSERROR_NOMEM;
}
}
window->scale = bw->scale;
/* linking */
window->parent = bw;
if (window->name)
LOG("Created frame '%s'", window->name);
else
LOG("Created frame (unnamed)");
}
}
/* 2. Calculate dimensions */
browser_window_update_extent(bw);
browser_window_recalculate_frameset(bw);
/* 3. Recurse for grandchildren */
for (row = 0; row < bw->rows; row++) {
for (col = 0; col < bw->cols; col++) {
index = (row * bw->cols) + col;
frame = &frameset->children[index];
window = &bw->children[index];
if (frame->children)
browser_window_create_frameset(window, frame);
}
}
/* Use the URL of the first ancestor window containing html content
* as the referer */
for (window = bw; window->parent; window = window->parent) {
if (window->current_content &&
content_get_type(window->current_content) ==
CONTENT_HTML)
break;
}
parent = window->current_content;
/* 4. Launch content */
for (row = 0; row < bw->rows; row++) {
for (col = 0; col < bw->cols; col++) {
index = (row * bw->cols) + col;
frame = &frameset->children[index];
window = &bw->children[index];
if (frame->url) {
browser_window_navigate(window,
frame->url,
hlcache_handle_get_url(parent),
BW_NAVIGATE_HISTORY |
BW_NAVIGATE_UNVERIFIABLE,
NULL,
NULL,
parent);
}
}
}
return NSERROR_OK;
}
