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#if defined(Hiro_Button)
namespace hiro {
auto pButton::construct() -> void {
hwnd = CreateWindow(
L"BUTTON", L"", WS_CHILD | WS_TABSTOP,
0, 0, 0, 0, _parentHandle(), nullptr, GetModuleHandle(0), 0
);
pWidget::construct();
_setState();
}
auto pButton::destruct() -> void {
DestroyWindow(hwnd);
}
auto pButton::minimumSize() const -> Size {
Size icon = {(s32)state().icon.width(), (s32)state().icon.height()};
Size text = state().text ? pFont::size(self().font(true), state().text) : Size{};
Size size;
if(state().orientation == Orientation::Horizontal) {
size.setWidth(icon.width() + (icon && text ? 5 : 0) + text.width());
size.setHeight(max(icon.height(), text.height()));
}
if(state().orientation == Orientation::Vertical) {
size.setWidth(max(icon.width(), text.width()));
size.setHeight(icon.height() + (icon && text ? 5 : 0) + text.height());
}
size.setHeight(max(size.height(), pFont::size(self().font(true), " ").height()));
return {size.width() + (state().bordered && text ? 20 : 10), size.height() + 10};
}
auto pButton::setBordered(bool bordered) -> void {
_setState();
}
auto pButton::setEnabled(bool enabled) -> void {
pWidget::setEnabled(enabled);
_setState();
}
auto pButton::setFont(const Font& font) -> void {
pWidget::setFont(font);
_setState();
}
auto pButton::setIcon(const image& icon) -> void {
_setState();
}
auto pButton::setOrientation(Orientation orientation) -> void {
_setState();
}
auto pButton::setText(const string& text) -> void {
_setState();
}
auto pButton::setVisible(bool visible) -> void {
pWidget::setVisible(visible);
_setState();
}
//
auto pButton::onActivate() -> void {
self().doActivate();
}
//BUTTON cannot draw borderless buttons on its own
//BS_OWNERDRAW will send WM_DRAWITEM; but will disable hot-tracking notifications
//to gain hot-tracking plus borderless buttons; BUTTON is superclassed and WM_PAINT is hijacked
//note: letting hiro paint bordered buttons will lose the fade animations on Vista+;
//however, it will allow placing icons immediately next to text (original forces icon left alignment)
auto pButton::windowProc(HWND hwnd, UINT msg, WPARAM wparam, LPARAM lparam) -> maybe<LRESULT> {
if(msg == WM_KEYDOWN) {
//very useful for MessageDialog
self().doActivate();
}
if(msg == WM_PAINT) {
PAINTSTRUCT ps;
BeginPaint(hwnd, &ps);
auto buttonState = Button_GetState(hwnd);
Button_CustomDraw(hwnd, ps,
state().bordered, false, self().enabled(true), buttonState,
self().font(true), state().icon, state().orientation, state().text
);
EndPaint(hwnd, &ps);
return false;
}
return pWidget::windowProc(hwnd, msg, wparam, lparam);
}
//
auto pButton::_setState() -> void {
InvalidateRect(hwnd, 0, false);
}
//this function is designed to be used with Button, CheckButton, and RadioButton
auto Button_CustomDraw(HWND hwnd, PAINTSTRUCT& ps, bool bordered, bool checked, bool enabled, u32 state, const Font& font, const image& icon, Orientation orientation, const string& text) -> void {
RECT rc;
GetClientRect(hwnd, &rc);
Geometry geometry{rc.left, rc.top, rc.right - rc.left, rc.bottom - rc.top}, iconGeometry, textGeometry;
if(icon) iconGeometry.setSize({(s32)icon.width(), (s32)icon.height()});
if(text) textGeometry.setSize(pFont::size(font, text));
Position position;
Size size;
switch(orientation) {
case Orientation::Horizontal:
size = {iconGeometry.width() + (icon && text ? 5 : 0) + textGeometry.width(), max(iconGeometry.height(), textGeometry.height())};
position = {(geometry.width() - size.width()) / 2, (geometry.height() - size.height()) / 2};
iconGeometry.setPosition({position.x(), position.y() + (size.height() - iconGeometry.height()) / 2});
textGeometry.setPosition({position.x() + size.width() - textGeometry.width(), position.y() + (size.height() - textGeometry.height()) / 2});
break;
case Orientation::Vertical:
size = {max(iconGeometry.width(), textGeometry.width()), iconGeometry.height() + (icon && text ? 5 : 0) + textGeometry.height()};
position = {(geometry.width() - size.width()) / 2, (geometry.height() - size.height()) / 2};
iconGeometry.setPosition({position.x() + (size.width() - iconGeometry.width()) / 2, position.y()});
textGeometry.setPosition({position.x() + (size.width() - textGeometry.width()) / 2, position.y() + size.height() - textGeometry.height()});
break;
}
if(auto theme = OpenThemeData(hwnd, L"BUTTON")) {
DrawThemeParentBackground(hwnd, ps.hdc, &rc);
u32 flags = 0;
if(state & BST_PUSHED || checked) flags = PBS_PRESSED;
else if(state & BST_HOT) flags = PBS_HOT;
else if(bordered) flags = enabled ? PBS_NORMAL : PBS_DISABLED;
if(bordered || flags) DrawThemeBackground(theme, ps.hdc, BP_PUSHBUTTON, flags, &rc, &ps.rcPaint);
CloseThemeData(theme);
} else {
//Windows Classic
FillRect(ps.hdc, &rc, GetSysColorBrush(COLOR_3DFACE));
u32 flags = (state & BST_PUSHED || checked) ? DFCS_PUSHED : 0;
if(bordered || flags) DrawFrameControl(ps.hdc, &rc, DFC_BUTTON, DFCS_BUTTONPUSH | flags | (enabled ? 0 : DFCS_INACTIVE));
}
if(GetFocus() == hwnd) {
s32 offset = state ? 4 : 1;
RECT rcFocus{rc.left + offset, rc.top + offset, rc.right - offset, rc.bottom - offset};
if(!(state & BST_PUSHED) && !(state & BST_HOT)) DrawFocusRect(ps.hdc, &rcFocus);
}
if(icon) {
HDC hdcSource = CreateCompatibleDC(ps.hdc);
auto bitmap = CreateBitmap(icon);
SelectBitmap(hdcSource, bitmap);
BLENDFUNCTION blend{AC_SRC_OVER, 0, (BYTE)(IsWindowEnabled(hwnd) ? 255 : 128), AC_SRC_ALPHA};
AlphaBlend(
ps.hdc, iconGeometry.x(), iconGeometry.y(), icon.width(), icon.height(),
hdcSource, 0, 0, icon.width(), icon.height(), blend
);
DeleteObject(bitmap);
DeleteDC(hdcSource);
}
if(text) {
utf16_t wText(text);
SetBkMode(ps.hdc, TRANSPARENT);
SetTextColor(ps.hdc, GetSysColor(IsWindowEnabled(hwnd) ? COLOR_BTNTEXT : COLOR_GRAYTEXT));
auto hFont = pFont::create(font);
SelectObject(ps.hdc, hFont);
RECT rcText{
LONG(textGeometry.x()),
LONG(textGeometry.y()),
LONG(textGeometry.x() + textGeometry.width()),
LONG(textGeometry.y() + textGeometry.height())
};
DrawText(ps.hdc, wText, -1, &rcText, DT_NOPREFIX | DT_END_ELLIPSIS);
DeleteObject(hFont);
}
}
}
#endif
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