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dialog title support typecheck

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This commit is contained in:
xianjimli 2019-02-26 09:58:04 +08:00
parent e64853afa0
commit 9978289fbd
3 changed files with 21 additions and 7 deletions
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7
src/widgets/dialog_title.c
View File

@ -30,13 +30,14 @@ static ret_t dialog_title_on_paint_self(widget_t* widget, canvas_t* c) {
return widget_paint_helper(widget, c, NULL, NULL);
}
static const widget_vtable_t s_dialog_title_vtable = {.size = sizeof(dialog_title_t),
TK_DECL_VTABLE(dialog_title) = {.size = sizeof(dialog_title_t),
.type = WIDGET_TYPE_DIALOG_TITLE,
.parent = TK_PARENT_VTABLE(widget),
.create = dialog_title_create,
.on_paint_self = dialog_title_on_paint_self};
widget_t* dialog_title_create(widget_t* parent, xy_t x, xy_t y, wh_t w, wh_t h) {
widget_t* widget = widget_create(parent, &s_dialog_title_vtable, x, y, w, h);
widget_t* widget = widget_create(parent, TK_REF_VTABLE(dialog_title), x, y, w, h);
return_value_if_fail(widget != NULL, NULL);
widget_set_name(widget, "title");
@ -45,7 +46,7 @@ widget_t* dialog_title_create(widget_t* parent, xy_t x, xy_t y, wh_t w, wh_t h)
}
widget_t* dialog_title_cast(widget_t* widget) {
return_value_if_fail(widget != NULL && widget->vt == &s_dialog_title_vtable, NULL);
return_value_if_fail(WIDGET_IS_INSTANCE_OF(widget, dialog_title), NULL);
return widget;
}

5
src/widgets/dialog_title.h
View File

@ -82,7 +82,10 @@ widget_t* dialog_title_create(widget_t* parent, xy_t x, xy_t y, wh_t w, wh_t h);
*/
widget_t* dialog_title_cast(widget_t* widget);
#define DIALOG_TITLE(widget) ((dialog_title_t*)(widget))
#define DIALOG_TITLE(widget) ((dialog_title_t*)(dialog_title_cast(widget)))
/*public for subclass and runtime type check*/
TK_EXTERN_VTABLE(dialog_title);
END_C_DECLS

10
tests/dialog_title_test.cc Normal file
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@ -0,0 +1,10 @@
#include "widgets/dialog_title.h"
#include "gtest/gtest.h"
TEST(DialgTitle, cast) {
widget_t* w = dialog_title_create(NULL, 10, 20, 30, 40);
ASSERT_EQ(w, dialog_title_cast(w));
widget_destroy(w);
}