diff options
| -rw-r--r-- | desktop/scroll.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/desktop/scroll.c b/desktop/scroll.c index 1659ad69c..a5d9b24f4 100644 --- a/desktop/scroll.c +++ b/desktop/scroll.c @@ -33,6 +33,7 @@ #include "utils/messages.h" #include "utils/utils.h" + struct scroll { bool horizontal; /* Horizontal scroll if true, vertical if false */ @@ -61,6 +62,7 @@ struct scroll { also the pair scroll */ }; + /** Overflow scrollbar colours * * Overflow scrollbar colours can be set by front end code to try to match @@ -88,6 +90,7 @@ colour scroll_widget_arrow_colour = 0x00444444; /* dark grey */ * \return true if the scroll has been created succesfully * or false on memory exhaustion */ + bool scroll_create(bool horizontal, int length, int scrolled_dimension, int scrolled_visible, void *client_data, scroll_client_callback client_callback, @@ -127,11 +130,13 @@ bool scroll_create(bool horizontal, int length, return true; } + /** * Destroy a scroll. * * \param scroll the scroll to be destroyed */ + void scroll_destroy(struct scroll *scroll) { if (scroll->pair != NULL) @@ -139,6 +144,7 @@ void scroll_destroy(struct scroll *scroll) free(scroll); } + /** * Draw an outline rectangle common to a few of scroll elements. * @@ -151,6 +157,7 @@ void scroll_destroy(struct scroll *scroll) * \param inset true for inset outline, false for an outset one * \return */ + static inline bool scroll_redraw_scrollbar_rectangle( int x0, int y0, int x1, int y1, colour c, bool inset) { @@ -187,6 +194,7 @@ static inline bool scroll_redraw_scrollbar_rectangle( return true; } + /** * Redraw a part of the scroll. * @@ -197,6 +205,7 @@ static inline bool scroll_redraw_scrollbar_rectangle( * \param scale scale for the redraw * \return true on succes false otherwise */ + bool scroll_redraw(struct scroll *scroll, int x, int y, const struct rect *clip, float scale) { @@ -397,6 +406,7 @@ bool scroll_redraw(struct scroll *scroll, int x, int y, return true; } + /** * Set the value of the scroll. * @@ -405,6 +415,7 @@ bool scroll_redraw(struct scroll *scroll, int x, int y, * \param bar true if the value is for the scroll indication bar * offset, false if it is for the scrolled area one */ + void scroll_set(struct scroll *scroll, int scroll_val, bool bar) { int well_length; @@ -453,12 +464,14 @@ void scroll_set(struct scroll *scroll, int scroll_val, bool bar) scroll->client_callback(scroll->client_data, &msg); } + /** * Get the scroll offset for the visible part of the scrolled area. * * \param scroll the scroll to get the value from * \return scroll offset for the scrolled area */ + int scroll_get_offset(struct scroll *scroll) { if (scroll == NULL) @@ -477,6 +490,7 @@ int scroll_get_offset(struct scroll *scroll) * scrolled area to be set * \param scrolled_dimension -1 or the new dimension of the scrolled content */ + void scroll_set_extents(struct scroll *scroll, int length, int scrolled_visible, int scrolled_dimension) { @@ -497,17 +511,20 @@ void scroll_set_extents(struct scroll *scroll, int length, scroll->scrolled_d; } + /** * Check the orientation of the scroll. * * \param scroll the scroll to check the orientation of * \return true for a horizontal scroll, false for a vertical one */ + bool scroll_is_horizontal(struct scroll *scroll) { return scroll->horizontal; } + /** * Internal procedure used for staring a drag scroll for a scrollbar. * @@ -518,6 +535,7 @@ bool scroll_is_horizontal(struct scroll *scroll) * drags the content and the scrolls have to adjust) * \param pair whether the drag should start for the pair scroll too */ + static void scroll_drag_start_internal(struct scroll *scroll, int x, int y, bool reverse, bool pair) { @@ -567,6 +585,7 @@ static void scroll_drag_start_internal(struct scroll *scroll, int x, int y, scroll->client_callback(scroll->client_data, &msg); } + /** * Handle mouse actions other then drag ends. * @@ -576,6 +595,7 @@ static void scroll_drag_start_internal(struct scroll *scroll, int x, int y, * \param y Y coordinate of the mouse * \return message for the status bar or NULL on failure */ + const char *scroll_mouse_action(struct scroll *scroll, browser_mouse_state mouse, int x, int y) { @@ -696,6 +716,7 @@ const char *scroll_mouse_action(struct scroll *scroll, return status; } + /** * Handle end of mouse drags. * @@ -704,6 +725,7 @@ const char *scroll_mouse_action(struct scroll *scroll, * \param x X coordinate of the mouse * \param y Y coordinate of the mouse */ + void scroll_mouse_drag_end(struct scroll *scroll, browser_mouse_state mouse, int x, int y) { @@ -740,6 +762,7 @@ void scroll_mouse_drag_end(struct scroll *scroll, browser_mouse_state mouse, scroll->client_callback(scroll->client_data, &msg); } + /** * Called when the content, which is scrolled with some scrolls, is being * dragged so the scrolls have to adjust properly. If the content has both @@ -750,11 +773,13 @@ void scroll_mouse_drag_end(struct scroll *scroll, browser_mouse_state mouse, * \param x X coordinate of mouse during drag start * \param y Y coordinate of mouse during drag start */ + void scroll_start_content_drag(struct scroll *scroll, int x, int y) { scroll_drag_start_internal(scroll, x, y, true, true); } + /** * Connect a horizontal and a vertical scroll into a pair so that they * co-operate during 2D drags. @@ -762,6 +787,7 @@ void scroll_start_content_drag(struct scroll *scroll, int x, int y) * \param horizontal_scroll the scroll used for horizontal scrolling * \param vertical_scroll the scroll used for vertical scrolling */ + void scroll_make_pair(struct scroll *horizontal_scroll, struct scroll *vertical_scroll) { @@ -771,7 +797,9 @@ void scroll_make_pair(struct scroll *horizontal_scroll, vertical_scroll->pair = horizontal_scroll; } + void *scroll_get_data(struct scroll *scroll) { return scroll->client_data; } + |