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(svn r13039) -Codechange: make a class of the Query window.

release/0.7
rubidium 2008-05-11 06:59:51 +00:00
parent 7884a4ff19
commit 46875e28be
1 changed files with 66 additions and 67 deletions
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133
src/misc_gui.cpp
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@ -1104,63 +1104,76 @@ enum QueryWidgets {
QUERY_WIDGET_YES
};
struct query_d {
/**
* Window used for asking the user a YES/NO question.
*/
struct QueryWindow : public Window {
void (*proc)(Window*, bool); ///< callback function executed on closing of popup. Window* points to parent, bool is true if 'yes' clicked, false otherwise
uint64 params[10]; ///< local copy of _decode_parameters
StringID message; ///< message shown for query window
bool calledback; ///< has callback been executed already (internal usage for WE_DESTROY event)
};
assert_compile(WINDOW_CUSTOM_SIZE >= sizeof(query_d));
QueryWindow(const WindowDesc *desc, StringID caption, StringID message, Window *parent, void (*callback)(Window*, bool)) : Window(desc)
{
if (parent == NULL) parent = FindWindowById(WC_MAIN_WINDOW, 0);
this->parent = parent;
this->left = parent->left + (parent->width / 2) - (this->width / 2);
this->top = parent->top + (parent->height / 2) - (this->height / 2);
static void QueryWndProc(Window *w, WindowEvent *e)
{
query_d *q = &WP(w, query_d);
switch (e->event) {
case WE_PAINT:
CopyInDParam(0, q->params, lengthof(q->params));
DrawWindowWidgets(w);
CopyInDParam(0, q->params, lengthof(q->params));
DrawStringMultiCenter(w->width / 2, (w->height / 2) - 10, q->message, w->width - 2);
break;
case WE_CLICK:
switch (e->we.click.widget) {
case QUERY_WIDGET_YES:
q->calledback = true;
if (q->proc != NULL) q->proc(w->parent, true);
/* Fallthrough */
case QUERY_WIDGET_NO:
delete w;
break;
}
break;
case WE_KEYPRESS: // ESC closes the window, Enter confirms the action
switch (e->we.keypress.keycode) {
case WKC_RETURN:
case WKC_NUM_ENTER:
q->calledback = true;
if (q->proc != NULL) q->proc(w->parent, true);
/* Fallthrough */
case WKC_ESC:
e->we.keypress.cont = false;
delete w;
break;
}
break;
case WE_DESTROY: // Call callback function (if any) on window close if not yet called
if (!q->calledback && q->proc != NULL) {
q->calledback = true;
q->proc(w->parent, false);
}
break;
/* Create a backup of the variadic arguments to strings because it will be
* overridden pretty often. We will copy these back for drawing */
CopyOutDParam(this->params, 0, lengthof(this->params));
this->widget[QUERY_WIDGET_CAPTION].data = caption;
this->message = message;
this->proc = callback;
}
}
~QueryWindow()
{
if (this->proc != NULL) this->proc(this->parent, false);
}
virtual void OnPaint()
{
CopyInDParam(0, this->params, lengthof(this->params));
DrawWindowWidgets(this);
CopyInDParam(0, this->params, lengthof(this->params));
DrawStringMultiCenter(this->width / 2, (this->height / 2) - 10, this->message, this->width - 2);
}
virtual void OnClick(Point pt, int widget)
{
switch (widget) {
case QUERY_WIDGET_YES:
if (this->proc != NULL) {
this->proc(this->parent, true);
this->proc = NULL;
}
/* Fallthrough */
case QUERY_WIDGET_NO:
delete this;
break;
}
}
virtual bool OnKeyPress(uint16 key, uint16 keycode)
{
/* ESC closes the window, Enter confirms the action */
switch (keycode) {
case WKC_RETURN:
case WKC_NUM_ENTER:
if (this->proc != NULL) {
this->proc(this->parent, true);
this->proc = NULL;
}
/* Fallthrough */
case WKC_ESC:
delete this;
return false;
}
return true;
}
};
static const Widget _query_widgets[] = {
@ -1177,7 +1190,7 @@ static const WindowDesc _query_desc = {
WC_CONFIRM_POPUP_QUERY, WC_NONE,
WDF_STD_TOOLTIPS | WDF_STD_BTN | WDF_UNCLICK_BUTTONS | WDF_DEF_WIDGET | WDF_MODAL,
_query_widgets,
QueryWndProc
NULL
};
/** Show a modal confirmation window with standard 'yes' and 'no' buttons
@ -1190,21 +1203,7 @@ static const WindowDesc _query_desc = {
* @param callback callback function pointer to set in the window descriptor*/
void ShowQuery(StringID caption, StringID message, Window *parent, void (*callback)(Window*, bool))
{
Window *w = new Window(&_query_desc);
if (w == NULL) return;
if (parent == NULL) parent = FindWindowById(WC_MAIN_WINDOW, 0);
w->parent = parent;
w->left = parent->left + (parent->width / 2) - (w->width / 2);
w->top = parent->top + (parent->height / 2) - (w->height / 2);
/* Create a backup of the variadic arguments to strings because it will be
* overridden pretty often. We will copy these back for drawing */
CopyOutDParam(WP(w, query_d).params, 0, lengthof(WP(w, query_d).params));
w->widget[QUERY_WIDGET_CAPTION].data = caption;
WP(w, query_d).message = message;
WP(w, query_d).proc = callback;
WP(w, query_d).calledback = false;
new QueryWindow(&_query_desc, caption, message, parent, callback);
}