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Backends: change header setup to avoid leaking backend implementation details into implot cpp files (#262)

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Max Thrun 2021-07-02 22:46:19 -07:00 committed by GitHub
parent e4805f629b
commit 4371c2d200
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GPG Key ID: 4AEE18F83AFDEB23
3 changed files with 34 additions and 155 deletions
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34
backends/implot_backend.h
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@ -25,25 +25,49 @@
#pragma once #pragma once
#if defined(IMPLOT_BACKEND_ENABLE_OPENGL3) #if defined(IMPLOT_BACKEND_ENABLE_OPENGL3)
#include "implot_impl_opengl3.h" #define IMPLOT_BACKEND_ENABLED
#define IMPLOT_BACKEND_HAS_HEATMAP
#define IMPLOT_BACKEND_HAS_COLORMAP
#elif defined(IMPLOT_BACKEND_ENABLE_METAL) #elif defined(IMPLOT_BACKEND_ENABLE_METAL)
#include "implot_impl_metal.h"
#endif #endif
namespace ImPlot { namespace ImPlot {
namespace Backend { namespace Backend {
#ifndef IMPLOT_BACKEND_ENABLED #ifdef IMPLOT_BACKEND_ENABLED
void* CreateContext();
void DestroyContext();
void BustPlotCache();
void BustItemCache();
#else
inline void* CreateContext() { return nullptr; } inline void* CreateContext() { return nullptr; }
inline void DestroyContext() {} inline void DestroyContext() {}
inline void BustPlotCache() {} inline void BustPlotCache() {}
inline void BustItemCache() {} inline void BustItemCache() {}
#endif #endif
#ifndef IMPLOT_BACKEND_HAS_COLORMAP #ifdef IMPLOT_BACKEND_HAS_COLORMAP
void AddColormap(const ImU32*, int, bool);
#else
inline void AddColormap(const ImU32*, int, bool) {} inline void AddColormap(const ImU32*, int, bool) {}
#endif #endif
#ifdef IMPLOT_BACKEND_HAS_HEATMAP
void SetHeatmapData(int itemID, const ImS16* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImS32* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImS64* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImS8* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImU16* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImU32* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImU64* values, int rows, int cols);
void SetHeatmapData(int itemID, const ImU8* values, int rows, int cols);
void SetHeatmapData(int itemID, const double* values, int rows, int cols);
void SetHeatmapData(int itemID, const float* values, int rows, int cols);
void RenderHeatmap(
int itemID, ImDrawList& DrawList, const ImVec2& bounds_min, const ImVec2& bounds_max,
float scale_min, float scale_max, ImPlotColormap colormap, bool reverse_y);
void SetAxisLog(int itemID, bool x_is_log, bool y_is_log, const ImPlotPoint& bounds_min, const ImPlotPoint& bounds_max);
#endif
} }
} }

4
backends/implot_impl_opengl3.cpp
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@ -1,5 +1,3 @@
#ifdef IMPLOT_BACKEND_ENABLE_OPENGL3
#include "../implot.h" #include "../implot.h"
#include "../implot_internal.h" #include "../implot_internal.h"
#include "implot_backend.h" #include "implot_backend.h"
@ -388,5 +386,3 @@ void BustItemCache() {}
} }
} }
#endif

141
backends/implot_impl_opengl3.h
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@ -24,10 +24,6 @@
#pragma once #pragma once
#define IMPLOT_BACKEND_ENABLED
#define IMPLOT_BACKEND_HAS_HEATMAP
#define IMPLOT_BACKEND_HAS_COLORMAP
#if !defined(IMGUI_IMPL_OPENGL_ES2) \ #if !defined(IMGUI_IMPL_OPENGL_ES2) \
&& !defined(IMGUI_IMPL_OPENGL_ES3) \ && !defined(IMGUI_IMPL_OPENGL_ES3) \
&& !defined(IMGUI_IMPL_OPENGL_LOADER_GL3W) \ && !defined(IMGUI_IMPL_OPENGL_LOADER_GL3W) \
@ -69,140 +65,3 @@
#endif #endif
#endif #endif
namespace ImPlot {
namespace Backend {
//-----------------------------------------------------------------------------
// [SECTION] Misc backend functions
//-----------------------------------------------------------------------------
/**
* @brief Struct to hold backend-related context data
*
* A backend may store in this struct any data it needs, with no constraints. A
* pointer to this struct will be stored inside ImPlot's context and can be
* accessed at any time. This pointer will be set to the returned value of @ref
* CreateContext(). All resources held by this struct must be freed inside @ref
* DestroyContext().
*/
struct ContextData;
/**
* @brief Create backend context
*
* Creates and intializes the backend context. The returned pointer will be saved
* in ImPlot's context and can be accessed later.
*/
IMPLOT_API void* CreateContext();
/**
* @brief Destroy backend context
*
* Destroys and frees any memory or resources needed by the backend. After this
* call returns, no more calls to any backend function can be performed.
*/
IMPLOT_API void DestroyContext();
/** @brief Bust plot cache. Called from @ref ImPlot::BustPlotCache() */
IMPLOT_API void BustPlotCache();
/** @brief Bust item cache. Called from @ref ImPlot::BustItemCache() */
IMPLOT_API void BustItemCache();
//-----------------------------------------------------------------------------
// [SECTION] Colormap functions
//-----------------------------------------------------------------------------
/**
* @brief Add a colormap
*
* Adds a colormap to be handled by the backend.
*
* @param keys Colors for this colormap, in RGBA format
* @param count Number of colors in this colormap
* @param qual Qualitative: whether the colormap is continuous (`false`) or
* not (`true`)
*/
IMPLOT_API void AddColormap(const ImU32* keys, int count, bool qual);
//-----------------------------------------------------------------------------
// [SECTION] Heatmap functions
//-----------------------------------------------------------------------------
/**
* @brief Set heatmap data
*
* Sets the data of the heatmap with the given plot ID.
*
* @param itemID ID of the heatmap to update.
* @param values Data of the heatmap to be set.`values[0]` corresponds with the
* top-left corner of the data.
* @param rows Number of rows of this heatmap
* @param cols Number of columns of this heatmap
*/
IMPLOT_API void SetHeatmapData(int itemID, const ImS8* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImU8*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImU8* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImS16*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImS16* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImU16*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImU16* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImS32*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImS32* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImU32*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImU32* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const float*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const float* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const double*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const double* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImS64*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImS64* values, int rows, int cols);
/** @copydoc SetHeatmapData(int,const ImU64*,int,int) */
IMPLOT_API void SetHeatmapData(int itemID, const ImU64* values, int rows, int cols);
/**
* @brief Render heatmap
*
* Renders the heatmap using OpenGL acceleration
*
* @param itemID ID of the heatmap to be rendered
* @param DrawList Draw list where to submit the render commands
* @param bounds_min Minimum bounds of the heatmap (without clipping)
* @param bounds_max Maximum bounds of the heatmap (without clipping)
* @param scale_min Minimum value of the heatmap
* @param scale_max Maximum value of the heatmap
* @param colormap Colormap to be used when rendering this heatmap
*
* @note There might be values greater than `scale_max` or lower than `scale_min`.
* The shader used for rendering will clamp this values.
*/
IMPLOT_API void RenderHeatmap(
int itemID, ImDrawList& DrawList, const ImVec2& bounds_min, const ImVec2& bounds_max,
float scale_min, float scale_max, ImPlotColormap colormap, bool reverse_y);
/**
* @brief Set logarithmic axis
*
* Sets whether the X and Y axis are logarithmic or not, and their bounds. This
* function only has to be called if either the axis change state or if the bounds
* change.
*
* @param x_is_log Whether the X axis is logarithmic or not
* @param y_is_log Whether the Y axis is logarithmic or not
* @param bounds_min Minimum bounds (for X & Y) of the heatmap
* @param bounds_min Maximum bounds (for X & Y) of the heatmap
*/
void SetAxisLog(int itemID, bool x_is_log, bool y_is_log, const ImPlotPoint& bounds_min, const ImPlotPoint& bounds_max);
}
}