bgfx/examples/common/imgui/imgui.h
Branimir Karadžić ee90f34a06 Cleanup.
2017-07-08 13:09:44 -07:00

143 lines
4.2 KiB
C++

/*
* Copyright 2011-2017 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
#ifndef IMGUI_H_HEADER_GUARD
#define IMGUI_H_HEADER_GUARD
#include <bgfx/bgfx.h>
#include <ocornut-imgui/imgui.h>
#include <iconfontheaders/icons_kenney.h>
#include <iconfontheaders/icons_font_awesome.h>
#define IMGUI_MBUT_LEFT 0x01
#define IMGUI_MBUT_RIGHT 0x02
#define IMGUI_MBUT_MIDDLE 0x04
inline uint32_t imguiRGBA(uint8_t _r, uint8_t _g, uint8_t _b, uint8_t _a = 255)
{
return 0
| (uint32_t(_r) << 0)
| (uint32_t(_g) << 8)
| (uint32_t(_b) << 16)
| (uint32_t(_a) << 24)
;
}
namespace bx { struct AllocatorI; }
void imguiCreate(float _fontSize = 18.0f, bx::AllocatorI* _allocator = NULL);
void imguiDestroy();
void imguiBeginFrame(int32_t _mx, int32_t _my, uint8_t _button, int32_t _scroll, uint16_t _width, uint16_t _height, char _inputChar = 0, uint8_t _view = 255);
void imguiEndFrame();
namespace entry { class AppI; }
void showExampleDialog(entry::AppI* _app);
namespace ImGui
{
#define IMGUI_FLAGS_NONE UINT8_C(0x00)
#define IMGUI_FLAGS_ALPHA_BLEND UINT8_C(0x01)
// Helper function for passing bgfx::TextureHandle to ImGui::Image.
inline void Image(bgfx::TextureHandle _handle
, uint8_t _flags
, uint8_t _mip
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
, const ImVec4& _borderCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
)
{
union { struct { bgfx::TextureHandle handle; uint8_t flags; uint8_t mip; } s; ImTextureID ptr; } texture;
texture.s.handle = _handle;
texture.s.flags = _flags;
texture.s.mip = _mip;
Image(texture.ptr, _size, _uv0, _uv1, _tintCol, _borderCol);
}
// Helper function for passing bgfx::TextureHandle to ImGui::Image.
inline void Image(bgfx::TextureHandle _handle
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
, const ImVec4& _borderCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
)
{
Image(_handle, IMGUI_FLAGS_ALPHA_BLEND, 0, _size, _uv0, _uv1, _tintCol, _borderCol);
}
// Helper function for passing bgfx::TextureHandle to ImGui::ImageButton.
inline bool ImageButton(bgfx::TextureHandle _handle
, uint8_t _flags
, uint8_t _mip
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, int _framePadding = -1
, const ImVec4& _bgCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
)
{
union { struct { bgfx::TextureHandle handle; uint8_t flags; uint8_t mip; } s; ImTextureID ptr; } texture;
texture.s.handle = _handle;
texture.s.flags = _flags;
texture.s.mip = _mip;
return ImageButton(texture.ptr, _size, _uv0, _uv1, _framePadding, _bgCol, _tintCol);
}
// Helper function for passing bgfx::TextureHandle to ImGui::ImageButton.
inline bool ImageButton(bgfx::TextureHandle _handle
, const ImVec2& _size
, const ImVec2& _uv0 = ImVec2(0.0f, 0.0f)
, const ImVec2& _uv1 = ImVec2(1.0f, 1.0f)
, int _framePadding = -1
, const ImVec4& _bgCol = ImVec4(0.0f, 0.0f, 0.0f, 0.0f)
, const ImVec4& _tintCol = ImVec4(1.0f, 1.0f, 1.0f, 1.0f)
)
{
return ImageButton(_handle, IMGUI_FLAGS_ALPHA_BLEND, 0, _size, _uv0, _uv1, _framePadding, _bgCol, _tintCol);
}
inline void NextLine()
{
SetCursorPosY(GetCursorPosY() + GetTextLineHeightWithSpacing() );
}
inline bool TabButton(const char* _text, float _width, bool _active)
{
int32_t count = 1;
if (_active)
{
ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(1.0f, 0.75f, 0.0f, 0.78f) );
ImGui::PushStyleColor(ImGuiCol_Text, ImVec4(0.0f, 0.0f, 0.0f, 1.0f ) );
count = 2;
}
else
{
ImGui::PushStyleColor(ImGuiCol_Button, ImVec4(0.5f, 0.5f, 0.5f, 0.7f) );
}
bool retval = ImGui::Button(_text, ImVec2(_width, 20.0f) );
ImGui::PopStyleColor(count);
return retval;
}
inline bool MouseOverArea()
{
return false
|| ImGui::IsAnyItemHovered()
|| ImGui::IsMouseHoveringAnyWindow()
;
}
} // namespace ImGui
#endif // IMGUI_H_HEADER_GUARD