/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 2025 Olaf Wintermann. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
#include "button.h"
#include "widget.h"
#include <stdio.h>
#include <stdlib.h>
#include <cx/array_list.h>
#include <commctrl.h>
static W32WidgetClass button_widget_class = {
.eventproc = ui_button_eventproc,
.enable = w32_widget_default_enable,
.show = w32_widget_default_show,
.get_preferred_size = ui_button_get_preferred_size,
.destroy = w32_widget_default_destroy
};
static W32WidgetClass togglebutton_widget_class = {
.eventproc = ui_togglebutton_eventproc,
.enable = w32_widget_default_enable,
.show = w32_widget_default_show,
.get_preferred_size = ui_button_get_preferred_size,
.destroy = w32_widget_default_destroy
};
static W32WidgetClass radiobutton_widget_class = {
.eventproc = ui_radiobutton_eventproc,
.enable = w32_widget_default_enable,
.show = w32_widget_default_show,
.get_preferred_size = ui_button_get_preferred_size,
.destroy = w32_widget_default_destroy
};
UIWIDGET ui_button_create(UiObject *obj, UiButtonArgs *args) {
HINSTANCE hInstance = GetModuleHandle(NULL);
UiContainerPrivate *container = ui_obj_container(obj);
HWND parent = ui_container_get_parent(container);
UiLayout layout = UI_ARGS2LAYOUT(args);
HWND hwnd = CreateWindow(
"BUTTON",
args->label,
WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,
0, 0, 100, 30,
parent,
(HMENU)1,
hInstance,
NULL);
ui_win32_set_ui_font(hwnd);
W32Widget *widget = w32_widget_create(&button_widget_class, hwnd, sizeof(UiWidget));
ui_container_add(container, widget, &layout);
UiWidget *btn = (UiWidget*)widget;
btn->obj = obj;
btn->callback = args->onclick;
btn->callbackdata = args->onclickdata;
return widget;
}
W32Size ui_button_get_preferred_size(W32Widget *widget) {
W32Size size;
size.width = 100;
size.height = 30;
SIZE sz;
if (Button_GetIdealSize(widget->hwnd, &sz)) {
size.width = sz.cx;
size.height = sz.cy;
}
return size;
}
int ui_button_eventproc(W32Widget *widget, HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
UiWidget *w = (UiWidget*)widget;
if (uMsg != WM_COMMAND) {
return 0;
}
UiEvent e;
e.obj = w->obj;
e.document = e.obj->ctx->document;
e.window = e.obj->window;
e.eventdata = NULL;
e.eventdatatype = 0;
e.intval = 0;
e.set = ui_get_setop();
if (w->callback) {
w->callback(&e, w->callbackdata);
}
return 0;
}
static UIWIDGET create_togglebutton(UiObject *obj, UiToggleArgs *args, unsigned long type) {
HINSTANCE hInstance = GetModuleHandle(NULL);
UiContainerPrivate *container = ui_obj_container(obj);
HWND parent = ui_container_get_parent(container);
UiLayout layout = UI_ARGS2LAYOUT(args);
HWND hwnd = CreateWindow(
"BUTTON",
args->label,
WS_VISIBLE | WS_CHILD | type,
0, 0, 100, 30,
parent,
(HMENU)1,
hInstance,
NULL);
ui_win32_set_ui_font(hwnd);
W32Widget *widget = w32_widget_create(&togglebutton_widget_class, hwnd, sizeof(UiWidget));
ui_container_add(container, widget, &layout);
UiVar *var = uic_widget_var(obj->ctx, obj->ctx, args->value, args->varname, UI_VAR_INTEGER);
if (var) {
UiInteger *i = var->value;
i->obj = widget;
i->get = ui_togglebutton_get;
i->set = ui_togglebutton_set;
if (i->value != 0) {
SendMessage(hwnd, BM_SETCHECK, BST_CHECKED, 0);
}
}
UiWidget *btn = (UiWidget*)widget;
btn->obj = obj;
btn->var = var;
btn->callback = args->onchange;
btn->callbackdata = args->onchangedata;
return widget;
}
UIWIDGET ui_togglebutton_create(UiObject *obj, UiToggleArgs *args) {
return create_togglebutton(obj, args, BS_AUTOCHECKBOX | BS_PUSHLIKE);
}
UIWIDGET ui_checkbox_create(UiObject *obj, UiToggleArgs *args) {
return create_togglebutton(obj, args, BS_AUTOCHECKBOX);
}
UIWIDGET ui_switch_create(UiObject *obj, UiToggleArgs *args) {
return create_togglebutton(obj, args, BS_AUTOCHECKBOX);
}
int64_t ui_togglebutton_get(UiInteger *i) {
UiWidget *btn = (UiWidget*)i->obj;
LRESULT state = SendMessage(btn->widget.hwnd, BM_GETCHECK, 0, 0);
i->value = state;
return state;
}
void ui_togglebutton_set(UiInteger *i, int64_t v) {
UiWidget *btn = (UiWidget*)i->obj;
WPARAM state = v ? BST_CHECKED : BST_UNCHECKED;
SendMessage(btn->widget.hwnd, BM_SETCHECK, state, 0);
i->value = v;
}
int ui_togglebutton_eventproc(W32Widget *widget, HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
if (uMsg != WM_COMMAND) {
return 0;
}
UiWidget *w = (UiWidget*)widget;
UiEvent e;
e.obj = w->obj;
e.document = e.obj->ctx->document;
e.window = e.obj->window;
e.eventdata = NULL;
e.eventdatatype = 0;
e.intval = SendMessage(w->widget.hwnd, BM_GETCHECK, 0, 0);
e.set = ui_get_setop();
if (w->callback) {
w->callback(&e, w->callbackdata);
}
return 0;
}
UIWIDGET ui_radiobutton_create(UiObject *obj, UiToggleArgs *args) {
HINSTANCE hInstance = GetModuleHandle(NULL);
UiContainerPrivate *container = ui_obj_container(obj);
HWND parent = ui_container_get_parent(container);
UiLayout layout = UI_ARGS2LAYOUT(args);
HWND hwnd = CreateWindow(
"BUTTON",
args->label,
WS_VISIBLE | WS_CHILD | BS_AUTORADIOBUTTON | WS_GROUP ,
0, 0, 100, 30,
parent,
(HMENU)1,
hInstance,
NULL);
ui_win32_set_ui_font(hwnd);
W32Widget *widget = w32_widget_create(&radiobutton_widget_class, hwnd, sizeof(UiWidget));
ui_container_add(container, widget, &layout);
UiWidget *btn = (UiWidget*)widget;
UiVar *var = uic_widget_var(obj->ctx, obj->ctx, args->value, args->varname, UI_VAR_INTEGER);
if (var) {
UiInteger *i = var->value;
// Use a CxList as binding object (i->obj) and add all radiobuttons to it
// The first radiobutton, which binds to this var, creates the CxList
CxList *group = NULL;
if (i->obj) {
group = i->obj;
} else {
group = cxArrayListCreate(obj->ctx->allocator, NULL, CX_STORE_POINTERS, 8);
i->obj = group;
}
cxListAdd(group, btn);
if (i->value == cxListSize(group)) {
// TODO: select
}
}
btn->obj = obj;
btn->var = var;
btn->callback = args->onchange;
btn->callbackdata = args->onchangedata;
return widget;
}
int ui_radiobutton_eventproc(W32Widget *widget, HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam) {
if (uMsg != WM_COMMAND) {
return 0;
}
UiWidget *w = (UiWidget*)widget;
int checked = SendMessage(w->widget.hwnd, BM_GETCHECK, 0, 0);
if (!checked) {
return 0; // ignore uncheck events
}
int b = 0;
if (w->var) {
UiInteger *i = w->var->value;
CxList *group = i->obj;
// Find selected index and uncheck all radiobuttons in this group
// that are not this event widget
CxIterator iter = cxListIterator(group);
cx_foreach(UiWidget *, radiobutton, iter) {
if (radiobutton == w) {
i->value = iter.index+1;
b = i->value;
} else {
SendMessage(radiobutton->widget.hwnd, BM_SETCHECK, BST_UNCHECKED, 0);
}
}
}
UiEvent e;
e.obj = w->obj;
e.document = e.obj->ctx->document;
e.window = e.obj->window;
e.eventdata = NULL;
e.eventdatatype = 0;
e.intval = b;
e.set = ui_get_setop();
if (w->callback) {
w->callback(&e, w->callbackdata);
}
return 0;
}
int64_t ui_radiobutton_get(UiInteger *i) {
return i->value;
}
void ui_radiobutton_set(UiInteger *i, int64_t v) {
CxList *group = i->obj;
CxIterator iter = cxListIterator(group);
cx_foreach(UiWidget *, radiobutton, iter) {
SendMessage(radiobutton->widget.hwnd, BM_SETCHECK, iter.index+1 == v ? BST_CHECKED : BST_UNCHECKED, 0);
}
i->value = v;
}