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Mandelbrot: Implement palette switching.

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This commit is contained in:
Augustin Cavalier 2016-05-27 21:42:37 -04:00
parent 7c0a95d255
commit d25186e7a0
3 changed files with 64 additions and 6 deletions
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13
src/apps/mandelbrot/FractalEngine.cpp
View File

@ -40,6 +40,19 @@ FractalEngine::~FractalEngine()
void FractalEngine::MessageReceived(BMessage* msg)
{
switch (msg->what) {
case MSG_SET_PALETTE:
switch (msg->GetUInt8("palette", 0)) {
case 0: fColorset = Colorset_Royal; break;
case 1: fColorset = Colorset_DeepFrost; break;
case 2: fColorset = Colorset_Frost; break;
case 3: fColorset = Colorset_Fire; break;
case 4: fColorset = Colorset_Midnight; break;
case 5: fColorset = Colorset_Grassland; break;
case 6: fColorset = Colorset_Lightning; break;
case 7: fColorset = Colorset_Spring; break;
case 8: fColorset = Colorset_HighContrast; break;
}
break;
case MSG_RESIZE: {
delete fBitmapStandby;
// We don't delete the "display" bitmap; the viewer now owns it

3
src/apps/mandelbrot/FractalEngine.h
View File

@ -19,7 +19,8 @@ class BBitmap;
class FractalEngine : public BLooper {
public:
enum {
MSG_RESIZE = 'Frct',
MSG_SET_PALETTE = 'Frct',
MSG_RESIZE,
MSG_RENDER,
MSG_RENDER_COMPLETE,
};

54
src/apps/mandelbrot/Mandelbrot.cpp
View File

@ -36,24 +36,24 @@ public:
virtual void MessageReceived(BMessage* msg);
virtual void Draw(BRect updateRect);
FractalEngine* fFractalEngine;
void RedrawFractal();
private:
bool fSizeChanged;
FractalEngine* fFractalEngine;
bool fOwnBitmap;
BBitmap* fDisplayBitmap;
double fLocationX;
double fLocationY;
double fSize;
void RedrawFractal();
};
FractalView::FractalView()
:
BView(NULL, B_WILL_DRAW | B_FRAME_EVENTS | B_PULSE_NEEDED),
fSizeChanged(false),
fFractalEngine(NULL),
fSizeChanged(false),
fOwnBitmap(false),
fDisplayBitmap(NULL),
fLocationX(0),
@ -161,7 +161,17 @@ void FractalView::Draw(BRect updateRect)
class MandelbrotWindow : public BWindow
{
public:
enum {
MSG_ROYAL_PALETTE = 'MndW',
MSG_DEEPFROST_PALETTE,
MSG_FROST_PALETTE,
MSG_FIRE_PALETTE,
MSG_MIDNIGHT_PALETTE,
MSG_GRASSLAND_PALETTE,
MSG_LIGHTNING_PALETTE,
MSG_SPRING_PALETTE,
MSG_HIGHCONTRAST_PALETTE,
};
MandelbrotWindow(BRect frame);
~MandelbrotWindow() {}
@ -182,11 +192,26 @@ MandelbrotWindow::MandelbrotWindow(BRect frame)
SetPulseRate(250000); // pulse twice per second
BMenuBar* menuBar = new BMenuBar("MenuBar");
BMenu* paletteMenu;
BLayoutBuilder::Menu<>(menuBar)
.AddMenu(B_TRANSLATE("File"))
.AddItem(B_TRANSLATE("Quit"), B_QUIT_REQUESTED, 'Q')
.End()
.AddMenu(B_TRANSLATE("Palette"))
.GetMenu(paletteMenu)
.AddItem(B_TRANSLATE("Royal"), MSG_ROYAL_PALETTE)
.AddItem(B_TRANSLATE("Deepfrost"), MSG_DEEPFROST_PALETTE)
.AddItem(B_TRANSLATE("Frost"), MSG_FROST_PALETTE)
.AddItem(B_TRANSLATE("Fire"), MSG_FIRE_PALETTE)
.AddItem(B_TRANSLATE("Midnight"), MSG_MIDNIGHT_PALETTE)
.AddItem(B_TRANSLATE("Grassland"), MSG_GRASSLAND_PALETTE)
.AddItem(B_TRANSLATE("Lightning"), MSG_LIGHTNING_PALETTE)
.AddItem(B_TRANSLATE("Spring"), MSG_SPRING_PALETTE)
.AddItem(B_TRANSLATE("High contrast"), MSG_HIGHCONTRAST_PALETTE)
.End()
.End();
paletteMenu->SetRadioMode(true);
paletteMenu->FindItem(MSG_ROYAL_PALETTE)->SetMarked(true);
BLayoutBuilder::Group<>(this, B_VERTICAL, 0)
.SetInsets(0)
@ -196,15 +221,34 @@ MandelbrotWindow::MandelbrotWindow(BRect frame)
}
#define HANDLE_PALETTE(uiwhat, id) \
case uiwhat: { \
BMessage msg(FractalEngine::MSG_SET_PALETTE); \
msg.AddUInt8("palette", id); \
fFractalView->fFractalEngine->PostMessage(&msg); \
fFractalView->RedrawFractal(); \
break; \
}
void
MandelbrotWindow::MessageReceived(BMessage* msg)
{
switch (msg->what) {
HANDLE_PALETTE(MSG_ROYAL_PALETTE, 0)
HANDLE_PALETTE(MSG_DEEPFROST_PALETTE, 1)
HANDLE_PALETTE(MSG_FROST_PALETTE, 2)
HANDLE_PALETTE(MSG_FIRE_PALETTE, 3)
HANDLE_PALETTE(MSG_MIDNIGHT_PALETTE, 4)
HANDLE_PALETTE(MSG_GRASSLAND_PALETTE, 5)
HANDLE_PALETTE(MSG_LIGHTNING_PALETTE, 6)
HANDLE_PALETTE(MSG_SPRING_PALETTE, 7)
HANDLE_PALETTE(MSG_HIGHCONTRAST_PALETTE, 8)
default:
BWindow::MessageReceived(msg);
break;
}
}
#undef HANDLE_PALETTE
bool