Chameleon
Skinning Button using Chameleon
main.cpp
#include <CtrlLib/CtrlLib.h>
using namespace Upp;
#define LAYOUTFILE <Chameleon/Chameleon.lay>
#include <CtrlCore/lay.h>
#define IMAGECLASS MyButtonImg
#define IMAGEFILE <Chameleon/Chameleon.iml>
#include <Draw/iml.h>
struct ChEllipse {
int width;
Color pen;
Color color;
ChEllipse() {}
};
Value EllipseLook(int width, Color pen, Color color)
{
ChEllipse e;
e.width = width;
e.pen = pen;
e.color = color;
return RawToValue(e);
}
INITBLOCK {
ChLookFn(
[](Draw& w, const Rect& rect, const Value& v, int op, Color) -> Value {
if(IsTypeRaw<ChEllipse>(v)) {
const ChEllipse& e = ValueTo<ChEllipse>(v);
switch(op) {
case LOOK_MARGINS:
return Rect(e.width, e.width, e.width, e.width);
case LOOK_PAINT:
w.DrawEllipse(rect.Deflated(e.width), e.color, e.width, e.pen);
return 1;
}
}
return Null;
}
);
}
Button::Style ColorStyle()
{
Button::Style s = Button::StyleNormal();
s.look[0] = LtCyan();
s.look[1] = Yellow();
s.look[2] = Brown();
s.look[3] = Gray();
s.focus_use_ok = false; // otherwise Button would use OK style for focused button
return s;
}
Button::Style ImageStyle()
{
Button::Style s = Button::StyleNormal();
for(int i = 0; i < 4; i++)
s.look[i] = MyButtonImg::Get(i);
s.pressoffset = Point(1, -1);
s.focus_use_ok = false; // otherwise Button would use OK style for focused button
return s;
}
Button::Style FnStyle()
{
Button::Style s = Button::StyleNormal().Write();
s.look[0] = EllipseLook(2, Black, LtGray);
s.look[1] = EllipseLook(3, Red, WhiteGray);
s.look[2] = EllipseLook(4, Blue, White);
s.look[3] = EllipseLook(1, Black, Gray);
s.focus_use_ok = false; // otherwise Button would use OK style for focused button
return s;
}
void ColorSkin()
{
Button::StyleNormal().Write() = ColorStyle();
}
void ImageSkin()
{
Button::StyleNormal().Write() = ImageStyle();
}
void FnSkin()
{
Button::StyleNormal().Write() = FnStyle();
}
struct MyApp : WithChameleonLayout<TopWindow> {
void Set(void (*skin)());
Button::Style scolor, simage, sfn;
MyApp();
};
void MyApp::Set(void (*skin)())
{
SetSkin(skin);
}
MyApp::MyApp()
{
CtrlLayout(*this, "Chameleon example");
host << [=] { Set(ChHostSkin); };
std << [=] { Set(ChStdSkin); };
classic << [=] { Set(ChClassicSkin); };
color << [=] { Set(ColorSkin); };
scolor = ColorStyle();
color.SetStyle(scolor);
img << [=] { Set(ImageSkin); };
simage = ImageStyle();
img.SetStyle(simage);
fn << [=] { Set(FnSkin); };
sfn = FnStyle();
fn.SetStyle(sfn);
}
GUI_APP_MAIN
{
MyApp().Run();
}
Chameleon.lay
LAYOUT(ChameleonLayout, 228, 68)
ITEM(Button, host, SetLabel(t_("Host")).LeftPosZ(8, 68).TopPosZ(8, 24))
ITEM(Button, std, SetLabel(t_("Standard")).LeftPosZ(80, 68).TopPosZ(8, 24))
ITEM(Button, classic, SetLabel(t_("Classic")).LeftPosZ(152, 68).TopPosZ(8, 24))
ITEM(Button, color, SetLabel(t_("Color")).LeftPosZ(8, 68).TopPosZ(36, 24))
ITEM(Button, img, SetLabel(t_("Image")).LeftPosZ(80, 68).TopPosZ(36, 24))
ITEM(Button, fn, SetLabel(t_("Function")).LeftPosZ(152, 68).TopPosZ(36, 24))
END_LAYOUT
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