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-rw-r--r--render/box.c164
1 files changed, 149 insertions, 15 deletions
diff --git a/render/box.c b/render/box.c
index b1ebfcbad..0c0985dab 100644
--- a/render/box.c
+++ b/render/box.c
@@ -29,11 +29,13 @@
#include "content/content.h"
#include "css/css.h"
#include "css/dump.h"
+#include "desktop/scroll.h"
#include "desktop/options.h"
#include "render/box.h"
#include "render/form.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);
@@ -80,7 +82,7 @@ struct box * box_create(css_computed_style *style,
box->descendant_x1 = box->descendant_y1 = 0;
for (i = 0; i != 4; i++)
box->margin[i] = box->padding[i] = box->border[i].width = 0;
- box->scroll_x = box->scroll_y = 0;
+ box->scroll_x = box->scroll_y = NULL;
box->min_width = 0;
box->max_width = UNKNOWN_MAX_WIDTH;
box->byte_offset = 0;
@@ -226,6 +228,10 @@ void box_free_box(struct box *box)
if (!box->clone) {
if (box->gadget)
form_free_control(box->gadget);
+ if (box->scroll_x != NULL)
+ scroll_destroy(box->scroll_x);
+ if (box->scroll_y != NULL)
+ scroll_destroy(box->scroll_y);
}
talloc_free(box);
@@ -251,8 +257,8 @@ void box_coords(struct box *box, int *x, int *y)
} while (!box->float_children);
} else
box = box->parent;
- *x += box->x - box->scroll_x;
- *y += box->y - box->scroll_y;
+ *x += box->x - scroll_get_offset(box->scroll_x);
+ *y += box->y - scroll_get_offset(box->scroll_y);
}
}
@@ -328,8 +334,10 @@ struct box *box_at_point(struct box *box, const int x, const int y,
/* consider floats second, since they will often overlap other boxes */
for (child = box->float_children; child; child = child->next_float) {
if (box_contains_point(child, x - bx, y - by, &physically)) {
- *box_x = bx + child->x - child->scroll_x;
- *box_y = by + child->y - child->scroll_y;
+ *box_x = bx + child->x -
+ scroll_get_offset(child->scroll_x);
+ *box_y = by + child->y -
+ scroll_get_offset(child->scroll_y);
if (physically)
return child;
@@ -345,8 +353,10 @@ non_float_children:
if (box_is_float(child))
continue;
if (box_contains_point(child, x - bx, y - by, &physically)) {
- *box_x = bx + child->x - child->scroll_x;
- *box_y = by + child->y - child->scroll_y;
+ *box_x = bx + child->x -
+ scroll_get_offset(child->scroll_x);
+ *box_y = by + child->y -
+ scroll_get_offset(child->scroll_y);
if (physically)
return child;
@@ -370,16 +380,18 @@ siblings:
/* siblings and siblings of ancestors */
while (box) {
if (box_is_float(box)) {
- bx -= box->x - box->scroll_x;
- by -= box->y - box->scroll_y;
+ bx -= box->x - scroll_get_offset(box->scroll_x);
+ by -= box->y - scroll_get_offset(box->scroll_y);
for (sibling = box->next_float; sibling;
sibling = sibling->next_float) {
if (box_contains_point(sibling,
x - bx, y - by, &physically)) {
*box_x = bx + sibling->x -
- sibling->scroll_x;
+ scroll_get_offset(
+ sibling->scroll_x);
*box_y = by + sibling->y -
- sibling->scroll_y;
+ scroll_get_offset(
+ sibling->scroll_y);
if (physically)
return sibling;
@@ -398,8 +410,8 @@ siblings:
goto non_float_children;
} else {
- bx -= box->x - box->scroll_x;
- by -= box->y - box->scroll_y;
+ bx -= box->x - scroll_get_offset(box->scroll_x);
+ by -= box->y - scroll_get_offset(box->scroll_y);
for (sibling = box->next; sibling;
sibling = sibling->next) {
if (box_is_float(sibling))
@@ -407,9 +419,11 @@ siblings:
if (box_contains_point(sibling, x - bx, y - by,
&physically)) {
*box_x = bx + sibling->x -
- sibling->scroll_x;
+ scroll_get_offset(
+ sibling->scroll_x);
*box_y = by + sibling->y -
- sibling->scroll_y;
+ scroll_get_offset(
+ sibling->scroll_y);
if (physically)
return sibling;
@@ -978,3 +992,123 @@ void box_duplicate_update(struct box *box,
box->next_float = box_dict_element->new;
}
}
+
+/**
+ * Applies the given scroll setup to a box. This includes scroll
+ * creation/deletion as well as scroll dimension updates.
+ *
+ * \param box the box to handle the scrolls for
+ * \param x X coordinate of the box
+ * \param y Y coordinate of the box
+ * \param bottom whether the horizontal scrollbar should be present
+ * \param right whether the vertical scrollbar should be present
+ * \return true on success false otherwise
+ */
+bool box_handle_scrollbars(struct box *box, int x, int y, bool bottom,
+ bool right)
+{
+ struct browser_scroll_data *data;
+ int padding_width, padding_height;
+
+ padding_width = box->width + box->padding[RIGHT] + box->padding[LEFT];
+ padding_height = box->height + box->padding[TOP] + box->padding[BOTTOM];
+
+ if (!bottom && box->scroll_x != NULL) {
+ data = scroll_get_data(box->scroll_x);
+ scroll_destroy(box->scroll_x);
+ free(data);
+ box->scroll_x = NULL;
+ }
+
+ if (!right && box->scroll_y != NULL) {
+ data = scroll_get_data(box->scroll_x);
+ scroll_destroy(box->scroll_y);
+ free(data);
+ box->scroll_y = NULL;
+ }
+
+ if (!bottom && !right)
+ return true;
+
+ if (right) {
+ if (box->scroll_y == NULL) {
+ data = malloc(sizeof(struct browser_scroll_data));
+ if (data == NULL) {
+ LOG(("malloc failed"));
+ warn_user("NoMemory", 0);
+ return false;
+ }
+ data->bw = current_redraw_browser;
+ data->box = box;
+ if (!scroll_create(false,
+ padding_height,
+ box->descendant_y1 - box->descendant_y0,
+ box->height,
+ data,
+ browser_scroll_callback,
+ &(box->scroll_y)))
+ return false;
+ } else
+ scroll_set_length_and_visible(box->scroll_y,
+ padding_height, box->height);
+ }
+ if (bottom) {
+ if (box->scroll_x == NULL) {
+ data = malloc(sizeof(struct browser_scroll_data));
+ if (data == NULL) {
+ LOG(("malloc failed"));
+ warn_user("NoMemory", 0);
+ return false;
+ }
+ data->bw = current_redraw_browser;
+ data->box = box;
+ if (!scroll_create(true,
+ padding_width -
+ (right ? SCROLLBAR_WIDTH : 0),
+ box->descendant_x1 - box->descendant_x0,
+ box->width,
+ data,
+ browser_scroll_callback,
+ &box->scroll_x))
+ return false;
+ } else
+ scroll_set_length_and_visible(box->scroll_x,
+ padding_width -
+ (right ? SCROLLBAR_WIDTH : 0),
+ box->width);
+ }
+
+ if (right && bottom)
+ scroll_make_pair(box->scroll_x, box->scroll_y);
+
+ return true;
+}
+
+/**
+ * Determine if a box has a vertical scrollbar.
+ *
+ * \param box scrolling box
+ * \return the box has a vertical scrollbar
+ */
+
+bool box_vscrollbar_present(const struct box * const box)
+{
+ return box->descendant_y0 < -box->border[TOP].width ||
+ box->padding[TOP] + box->height + box->padding[BOTTOM] +
+ box->border[BOTTOM].width < box->descendant_y1;
+}
+
+
+/**
+ * Determine if a box has a horizontal scrollbar.
+ *
+ * \param box scrolling box
+ * \return the box has a horizontal scrollbar
+ */
+
+bool box_hscrollbar_present(const struct box * const box)
+{
+ return box->descendant_x0 < -box->border[LEFT].width ||
+ box->padding[LEFT] + box->width + box->padding[RIGHT] +
+ box->border[RIGHT].width < box->descendant_x1;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-20 03:12:08 +0000