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//
// Copyright 2013 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#ifndef HUD_H
#define HUD_H
#include <algorithm>
#include <cstdarg>
#include <math.h>
#include <string>
#include <vector>
#define OSD_HUD_USE_FUNCTION_POINTERS (__cplusplus <= 199711L)
#if !OSD_HUD_USE_FUNCTION_POINTERS
#include <functional>
#endif
#include "hud.h"
class Hud
{
public:
#if OSD_HUD_USE_FUNCTION_POINTERS
typedef void (*RadioButtonCallback)(int c);
typedef void (*CheckBoxCallback)(bool checked, int data);
typedef void (*SliderCallback)(float value, int data);
typedef void (*PullDownCallback)(int value);
#else
typedef std::function<void(int)> RadioButtonCallback;
typedef std::function<void(bool,int)> CheckBoxCallback;
typedef std::function<void(float, int)> SliderCallback;
typedef std::function<void(int)> PullDownCallback;
#endif
Hud();
virtual ~Hud();
virtual void Init(int width, int height, int framebufferWidth, int framebufferHeight);
virtual void Rebuild(int width, int height,
int framebufferWidth, int framebufferHeight);
virtual bool Flush();
bool IsVisible() const;
void SetVisible(bool visible);
void DrawString(int x, int y, const char *fmt, ...);
void DrawString(int x, int y, float r, float g, float b, const char *fmt, ...);
void Clear();
void AddLabel(const char *label, int x, int y);
void AddRadioButton(int group, const char *label, bool checked, int x, int y,
RadioButtonCallback callback=0, int data=0, int shortcut=0);
void AddCheckBox(const char *label, bool checked, int x, int y,
CheckBoxCallback callback=0, int data=0, int shortcut=0);
void AddSlider(const char *label, float min, float max, float value,
int x, int y, int width, bool intStep,
SliderCallback callback=0, int data=0);
int AddPullDown(const char *label, int x, int y, int width,
PullDownCallback callback=0, int shortcut=0);
void AddPullDownButton(int handle, const char *label, int value, bool checked=false);
bool KeyDown(int key);
bool MouseClick(int x, int y);
bool MouseCapture() const;
void MouseRelease();
void MouseMotion(int x, int y);
int GetWidth() const;
int GetHeight() const;
protected:
struct Item {
int x, y, w, h;
std::string label;
};
struct RadioButton : public Item {
int group;
int localIndex;
bool checked;
int shortcut;
bool sharedShortcut;
RadioButtonCallback callback;
int callbackData;
};
struct CheckBox : public Item {
bool checked;
CheckBoxCallback callback;
int callbackData;
int shortcut;
};
struct Slider : public Item {
float min, max;
float value;
SliderCallback callback;
int callbackData;
bool intStep;
void SetValue(float v) {
v = std::max(std::min(v, max), min);
if (intStep) {
// MSVC 2010 does not have std::round() or roundf()
v = v>0.0f ? floorf(v+0.5f) : ceilf(v-0.5f);
}
value = v;
}
};
struct PullDown : public Item {
bool open;
int selected;
std::vector<char const *> labels;
std::vector<int> values;
int shortcut;
PullDownCallback callback;
void SetSelected(int idx) {
if (idx>=0 && idx<(int)labels.size()) {
selected=idx;
}
}
};
static int drawString(std::vector<float> &vboSource, int x, int y,
float r, float g, float b, const char *c);
static int drawChar(std::vector<float> &vboSource, int x, int y,
float r, float g, float b, char ch);
bool hitTest(Item const &item, int x, int y) const {
int ix = item.x > 0 ? item.x : _windowWidth + item.x;
int iy = item.y > 0 ? item.y : _windowHeight + item.y;
return (x >= ix &&
y >= iy &&
x <= (ix + item.w) &&
y <= (iy + item.h));
}
void getWindowPos(Item const &item, int *x, int *y) const {
*x = item.x > 0 ? item.x : _windowWidth + item.x;
*y = item.y > 0 ? item.y : _windowHeight + item.y;
}
std::vector<float> & getVboSource();
std::vector<float> & getStaticVboSource();
private:
bool _visible;
std::vector<float> _vboSource, _staticVboSource;
int _windowWidth, _windowHeight;
int _framebufferWidth, _framebufferHeight;
bool _requiresRebuildStatic;
std::vector<Item> _labels;
std::vector<RadioButton> _radioButtons;
std::vector<CheckBox> _checkBoxes;
std::vector<Slider> _sliders;
std::vector<PullDown> _pulldowns;
int _capturedSlider;
};
#endif // HUD_H
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