/**
* This function is a helper function for the wtk_frame_handler() function.
* It is called when a pointer RELEASE event is sent to the container window.
* This function completes the move operation if the RELEASE event was inside
* the parent window's boundaries.
*
* \param frame Frame the received the event.
* \param event Pointer event information.
*/
static void wtk_handle_frame_release(struct wtk_frame *frame,
struct win_pointer_event const *event)
{
bool is_inside;
switch (frame->state) {
/* If we were moving when released, ungrab pointer and move if
* release was inside parent window extents.
*/
case WTK_FRAME_MOVING:
/* Ungrab pointer. */
wtk_stop_drag(&(event->last_pos));
win_grab_pointer(NULL);
frame->state = WTK_FRAME_NORMAL;
/* Check release position. */
is_inside = win_is_inside_window(win_get_parent(frame->
container), &(event->pos));
/* If inside, move frame according to drag distance. */
if (is_inside) {
struct win_area area = *win_get_area(frame->container);
area.pos.x += event->pos.x - wtk_drag_origin.x;
area.pos.y += event->pos.y - wtk_drag_origin.y;
win_set_area(frame->container, &area,
WIN_ATTR_POSITION);
}
break;
default:
break;
}
}
/**
* This function is a helper function for the wtk_frame_handler() function.
* It is called when a pointer RELEASE event is sent to the resize window.
* This function completes the resize operation if the RELEASE event was inside
* the parent window's boundaries.
*
* \param frame Frame the received the event.
* \param event Pointer event information.
*/
static void wtk_handle_resize_release(struct wtk_frame *frame,
struct win_pointer_event const *event)
{
bool is_inside;
switch (frame->state) {
/* If we were resizing when released, ungrab pointer and resize
* if release was inside parent window extents.
*/
case WTK_FRAME_RESIZING:
/* Ungrab pointer. */
wtk_stop_drag(&(event->last_pos));
win_grab_pointer(NULL);
frame->state = WTK_FRAME_NORMAL;
/* Check release position. */
is_inside = win_is_inside_window(win_get_parent(frame->
container), &(event->pos));
/* If inside, resize frame according to drag distance. */
if (is_inside) {
struct win_area contents_area
= *win_get_area(frame->contents);
contents_area.size.x += event->pos.x -
wtk_drag_origin.x;
contents_area.size.y += event->pos.y -
wtk_drag_origin.y;
wtk_resize_frame(frame, &contents_area);
}
break;
default:
break;
}
}
/**
* This function is the window event handler for check box widgets.
* It handles all events sent to the windows composing the widget.
*
* \param win Window receiving the event.
* \param type The event type.
* \param data Custom data, depending on event type.
*
* \return True if the event was recognized and accepted.
*/
static bool wtk_check_box_handler(struct win_window *win,
enum win_event_type type, void const *data)
{
struct win_command_event command;
/* Custom data for windows of a widget points back to the widget itself. */
struct wtk_check_box *check_box
= (struct wtk_check_box *)win_get_custom_data(win);
switch (type) {
case WIN_EVENT_DRAW:
{
/* There should not be other windows in this widget. */
Assert(win == check_box->container);
/* For DRAW events, the data parameter points to the
* clipping region.
*/
struct win_clip_region const *clip
= (struct win_clip_region const *)data;
/* Draw check box square. */
gfx_draw_rect(clip->origin.x + WTK_CHECKBOX_BOX_X,
clip->origin.y + WTK_CHECKBOX_BOX_Y,
WTK_CHECKBOX_BOX_SIZE,
WTK_CHECKBOX_BOX_SIZE,
WTK_CHECKBOX_BOX_COLOR);
/* Draw check box square background. */
if (WTK_CHECKBOX_BACKGROUND_COLOR != GFX_COLOR_TRANSPARENT) {
gfx_draw_filled_rect(clip->origin.x +
WTK_CHECKBOX_BOX_X + 1,
clip->origin.y +
WTK_CHECKBOX_BOX_Y + 1,
WTK_CHECKBOX_BOX_SIZE - 2,
WTK_CHECKBOX_BOX_SIZE - 2,
WTK_CHECKBOX_BACKGROUND_COLOR);
}
/* Draw check box select marker if selected. */
if (check_box->selected) {
gfx_draw_filled_rect(clip->origin.x +
WTK_CHECKBOX_BOX_X + 2,
clip->origin.y +
WTK_CHECKBOX_BOX_Y + 2,
WTK_CHECKBOX_BOX_SIZE - 4,
WTK_CHECKBOX_BOX_SIZE - 4,
WTK_CHECKBOX_SELECT_COLOR);
}
/* Draw caption. */
gfx_draw_string(check_box->caption,
clip->origin.x + WTK_CHECKBOX_CAPTION_X,
clip->origin.y + WTK_CHECKBOX_CAPTION_Y,
&sysfont,
GFX_COLOR_TRANSPARENT,
WTK_CHECKBOX_CAPTION_COLOR);
/* Always accept DRAW events, as the return value is
* ignored anyway for that event type.
*/
return true;
}
case WIN_EVENT_POINTER:
{
/* There should not be other windows in this widget. */
Assert(win == check_box->container);
/* For POINTER events, the data parameter points to the
* pointer event information.
*/
struct win_pointer_event const *event
= (struct win_pointer_event const *)data;
switch (event->type) {
case WIN_POINTER_PRESS:
/* When check box pressed, grab pointer and
* wait for release inside widget borders.
* Other widgets won't get pointer events
* before it is released, and the pointer
* ungrabbed by us.
*/
if (check_box->state == WTK_CHECKBOX_NORMAL) {
win_grab_pointer(check_box->container);
check_box->state = WTK_CHECKBOX_PRESSED;
win_redraw(check_box->container);
}
break;
case WIN_POINTER_RELEASE:
/* When check box released, take action only if
* released inside widget extents.
*/
if (check_box->state == WTK_CHECKBOX_PRESSED) {
bool is_inside;
/* Ungrab pointer. */
win_grab_pointer(NULL);
check_box->state = WTK_CHECKBOX_NORMAL;
win_redraw(check_box->container);
/* Check release position. */
is_inside = win_is_inside_window
(check_box->container,
&(event->pos));
/* Toggle check box if inside. */
if (is_inside) {
wtk_check_box_toggle(check_box);
/* Send non-zero command. */
if (check_box->command) {
command.sender
= check_box->container;
command.recipient
= check_box->container;
command.data
= check_box->command;
win_queue_command_event
(&command);
}
}
}
break;
default:
break;
}
/* Accept all POINTER events since all acitivity inside
* the widget extents is relevant to us.
*/
return true;
}
case WIN_EVENT_DESTROY:
/* There should not be other windows in this widget. */
Assert(win == check_box->container);
/* Memory allocated for windows will be automatically destroyed
* by the window system. We must destroy other allocations.
*/
membag_free(check_box->caption);
membag_free(check_box);
/* Always accept DESTROY events, as the return value is ignored
* anyway for that event type.
*/
return true;
default:
/* Reject unknown event types. */
return false;
}
}
/**
* This function is the window event handler for radio button widgets.
* It handles all events sent to the windows composing the widget.
*
* \param win Window receiving the event.
* \param type The event type.
* \param data Custom data, depending on event type.
*
* \return True if the event was recognized and accepted.
*/
static bool wtk_radio_button_handler(struct win_window *win,
enum win_event_type type, void const *data)
{
struct win_command_event command;
/* Custom data for windows of a widget points back to the widget itself. */
struct wtk_radio_button *radio_button
= (struct wtk_radio_button *)win_get_custom_data(win);
switch (type) {
case WIN_EVENT_DRAW:
{
/* For DRAW events, the data parameter points to the
* clipping region.
*/
struct win_clip_region const *clip
= (struct win_clip_region const *)data;
/* There should not be other windows in this widget. */
Assert(win == radio_button->container);
/* Draw radio button circle. */
gfx_draw_circle(clip->origin.x +
WTK_RADIOBUTTON_BUTTON_X,
clip->origin.y +
WTK_RADIOBUTTON_BUTTON_Y,
WTK_RADIOBUTTON_RADIUS,
WTK_RADIOBUTTON_BUTTON_COLOR,
GFX_WHOLE);
/* Draw radio button filled circle background. */
if (WTK_RADIOBUTTON_BACKGROUND_COLOR != GFX_COLOR_TRANSPARENT) {
gfx_draw_filled_circle(clip->origin.x +
WTK_RADIOBUTTON_BUTTON_X,
clip->origin.y +
WTK_RADIOBUTTON_BUTTON_Y,
WTK_RADIOBUTTON_RADIUS - 1,
WTK_RADIOBUTTON_BACKGROUND_COLOR,
GFX_WHOLE);
}
/* Draw radio button select marker if selected. */
if (radio_button->group->selected == radio_button) {
gfx_draw_filled_circle(clip->origin.x +
WTK_RADIOBUTTON_BUTTON_X,
clip->origin.y +
WTK_RADIOBUTTON_BUTTON_Y,
WTK_RADIOBUTTON_RADIUS - 2,
WTK_RADIOBUTTON_SELECT_COLOR,
GFX_WHOLE);
}
/* Draw caption. */
gfx_draw_string(radio_button->caption,
clip->origin.x +
WTK_RADIOBUTTON_CAPTION_X,
clip->origin.y +
WTK_RADIOBUTTON_CAPTION_Y, &sysfont,
GFX_COLOR_TRANSPARENT,
WTK_RADIOBUTTON_CAPTION_COLOR);
/* Always accept DRAW events, as the return value is
* ignored anyway for that event type.
*/
return true;
}
case WIN_EVENT_POINTER:
{
/* There should not be other windows in this widget. */
Assert(win == radio_button->container);
/* For POINTER events, the data parameter points to the
* pointer event information.
*/
struct win_pointer_event const *event
= (struct win_pointer_event const *)data;
switch (event->type) {
case WIN_POINTER_PRESS:
/* When radio button pressed, grab pointer and
* wait for release inside widget borders.
* Other widgets won't get pointer events
* before it is released, and the pointer
* ungrabbed by us.
*/
if (radio_button->state ==
WTK_RADIOBUTTON_NORMAL) {
win_grab_pointer(radio_button->
container);
radio_button->state
= WTK_RADIOBUTTON_PRESSED;
win_redraw(radio_button->container);
}
break;
case WIN_POINTER_RELEASE:
/* When button released, take action only if
* released inside widget extents.
*/
if (radio_button->state ==
WTK_RADIOBUTTON_PRESSED) {
bool is_inside;
/* Ungrab pointer. */
win_grab_pointer(NULL);
radio_button->state
= WTK_RADIOBUTTON_NORMAL;
win_redraw(radio_button->container);
/* Check release position. */
is_inside = win_is_inside_window
(radio_button->
container,
&(event->pos));
/* Select this radio button if inside. */
if (is_inside) {
wtk_radio_button_select
(radio_button);
/* Send non-zero command. */
if (radio_button->command) {
command.sender
= radio_button->
container;
command.recipient
= radio_button->
container;
command.data
= radio_button->command;
win_queue_command_event
(&command);
}
}
}
break;
default:
break;
}
/* Accept all POINTER events since all acitivity inside
* the widget extents is relevant to us.
*/
return true;
}
case WIN_EVENT_DESTROY:
/* There should not be other windows in this widget. */
Assert(win == radio_button->container);
/* Memory allocated for windows will be automatically destroyed
* by the window system. We must destroy other allocations.
*/
membag_free(radio_button->caption);
/* Destroy radio group as well if we are the last one in the
* group. If not, remove ourselves from the group.
*/
--(radio_button->group->num_references);
if (!radio_button->group->num_references) {
membag_free(radio_button->group);
} else {
if (radio_button->group->selected == radio_button) {
radio_button->group->selected = NULL;
}
}
membag_free(radio_button);
/* Always accept DESTROY events, as the return value is ignored
* anyway for that event type.
*/
return true;
default:
/* Reject unknown event types. */
return false;
}
}
/**
* This function is the window event handler for icon button widgets.
* It handles all events sent to the windows composing the widget.
*
* \param win Window receiving the event.
* \param type The event type.
* \param data Custom data, depending on event type.
*
* \return True if the event was recognized and accepted.
*/
static bool wtk_icon_button_handler(struct win_window *win,
enum win_event_type type, void const *data)
{
struct win_command_event command;
/* Custom data for windows of a widget points back to the widget itself. */
struct wtk_icon_button *icon_button
= (struct wtk_icon_button *)win_get_custom_data(win);
switch (type) {
case WIN_EVENT_DRAW:
{
/* For DRAW events, the data parameter points to the
* clipping region.
*/
struct win_clip_region const *clip
= (struct win_clip_region const *)data;
struct win_area const *area = win_get_area(win);
/* There should not be other windows in this widget. */
Assert(win == icon_button->container);
/* Draw icon button select marker if selected. */
if (icon_button->group->selected == icon_button) {
gfx_draw_rect(clip->origin.x, clip->origin.y,
area->size.x, area->size.y,
WTK_ICONBUTTON_SELECT_COLOR);
}
/* Always accept DRAW events, as the return value is
* ignored anyway for that event type.
*/
return true;
}
case WIN_EVENT_POINTER:
{
/* There should not be other windows in this widget. */
Assert(win == icon_button->container);
/* For POINTER events, the data parameter points to the
* pointer event information.
*/
struct win_pointer_event const *event
= (struct win_pointer_event const *)data;
switch (event->type) {
case WIN_POINTER_PRESS:
/* When icon button pressed, grab pointer and
* wait for release inside widget borders.
* Other widgets won't get pointer events
* before it is released, and the pointer
* ungrabbed by us.
*/
if (icon_button->state ==
WTK_ICONBUTTON_NORMAL) {
win_grab_pointer(icon_button->container);
icon_button->state
= WTK_ICONBUTTON_PRESSED;
win_redraw(icon_button->container);
}
break;
case WIN_POINTER_RELEASE:
/* When button released, take action only if
* released inside widget extents.
*/
if (icon_button->state ==
WTK_ICONBUTTON_PRESSED) {
bool is_inside;
/* Ungrab pointer. */
win_grab_pointer(NULL);
icon_button->state
= WTK_ICONBUTTON_NORMAL;
win_redraw(icon_button->container);
/* Check release position. */
is_inside = win_is_inside_window
(icon_button->
container,
&(event->pos));
/* Select this icon button if inside. */
if (is_inside) {
wtk_icon_button_select
(icon_button);
/* Send non-zero command. */
if (icon_button->command) {
command.sender
= icon_button->
container;
command.recipient
= icon_button->
container;
command.data
= icon_button->command;
win_queue_command_event
(&command);
}
}
}
break;
default:
break;
}
/* Accept all POINTER events since all activity inside
* the widget extents is relevant to us.
*/
return true;
}
case WIN_EVENT_DESTROY:
/* There should not be other windows in this widget. */
Assert(win == icon_button->container);
/* Destroy icon group as well if we are the last one in the
* group. If not, remove ourselves from the group.
*/
--(icon_button->group->num_references);
if (!icon_button->group->num_references) {
membag_free(icon_button->group);
} else {
if (icon_button->group->selected == icon_button) {
icon_button->group->selected = NULL;
}
}
membag_free(icon_button);
/* Always accept DESTROY events, as the return value is ignored
* anyway for that event type.
*/
return true;
default:
/* Reject unknown event types. */
return false;
}
}
/**
* This function is the window event handler for button widgets.
* It handles all events sent to the windows composing the widget.
*
* \param win Window receiving the event.
* \param type The event type.
* \param data Custom data, depending on event type.
*
* \return True if the event was recognized and accepted.
*/
static bool wtk_button_handler(struct win_window *win,
enum win_event_type type, void const *data)
{
/* Custom data for windows of a widget points back to the widget itself. */
struct wtk_button *button
= (struct wtk_button *)win_get_custom_data(win);
switch (type) {
case WIN_EVENT_DRAW:
{
/* For DRAW events, the data parameter points to the
* clipping region. */
struct win_clip_region const *clip
= (struct win_clip_region const *)data;
struct win_area const *area = win_get_area(win);
/* Preare background and caption colors depending on state of
* button. If pressed/highlighted, the colors are inverted. */
gfx_color_t background_color;
gfx_color_t caption_color;
/* There should not be other windows in this widget. */
Assert(win == button->container);
switch (button->state) {
case WTK_BUTTON_NORMAL:
background_color = WTK_BUTTON_BACKGROUND_COLOR;
caption_color = WTK_BUTTON_CAPTION_COLOR;
break;
case WTK_BUTTON_PRESSED:
background_color = WTK_BUTTON_CAPTION_COLOR;
caption_color = WTK_BUTTON_BACKGROUND_COLOR;
break;
default:
Assert(false);
background_color = WTK_BUTTON_BACKGROUND_COLOR;
caption_color = WTK_BUTTON_CAPTION_COLOR;
}
/* Draw background. */
gfx_draw_filled_rect(clip->origin.x, clip->origin.y,
area->size.x, area->size.y,
background_color);
/* Draw border. */
gfx_draw_rect(clip->origin.x, clip->origin.y,
area->size.x, area->size.y,
WTK_BUTTON_BORDER_COLOR);
/* Draw caption. */
gfx_draw_string_aligned(button->caption,
clip->origin.x + (area->size.x / 2),
clip->origin.y + (area->size.y / 2),
&sysfont, GFX_COLOR_TRANSPARENT, caption_color,
TEXT_POS_CENTER, TEXT_ALIGN_CENTER);
/* Always accept DRAW events, as the return value is
* ignored anyway for that event type.
*/
return true;
}
case WIN_EVENT_POINTER:
{
/* There should not be other windows in this widget. */
Assert(win == button->container);
/* For POINTER events, the data parameter points to the
* pointer event information.
*/
struct win_pointer_event const *event
= (struct win_pointer_event const *)data;
switch (event->type) {
case WIN_POINTER_PRESS:
/* When button pressed, grab pointer and wait
* for release inside button borders. Other
* widgets won't get pointer events before it
* is released, and the pointer ungrabbed by
* us.
*/
if (button->state == WTK_BUTTON_NORMAL) {
win_grab_pointer(button->container);
button->state = WTK_BUTTON_PRESSED;
win_redraw(button->container);
}
break;
case WIN_POINTER_RELEASE:
/* When button released, take action only if
* released inside widget extents.
*/
if (button->state == WTK_BUTTON_PRESSED) {
/* Ungrab pointer. */
win_grab_pointer(NULL);
button->state = WTK_BUTTON_NORMAL;
win_redraw(button->container);
/* Check release position. */
bool isInside = win_is_inside_window
(button->container,
&(event->pos));
/* Send command event if inside. */
if (isInside) {
struct win_command_event
command;
command.sender = button->
container;
command.recipient
= button->
container;
command.data = button->
command;
win_queue_command_event
(&command);
}
}
break;
default:
break;
}
/* Accept all POINTER events since all acitivity inside
* the widget extents is relevant to us.
*/
return true;
}
case WIN_EVENT_DESTROY:
{
/* There should not be other windows in this widget. */
Assert(win == button->container);
/* Memory allocated for windows will be automatically
* destroyed by the window system. We must destroy
* other allocations.
*/
membag_free(button->caption);
membag_free(button);
/* Always accept DESTROY events, as the return value is
* ignored anyway for that event type.
*/
return true;
}
default:
/* Reject unknown event types. */
return false;
}
}
