mame/3rdparty/bgfx/examples/common/font/text_metrics.h
Julian Sikorski 0837e7451a WIP: sync bgfx, bx and bimg with latest upstream (#5723)
* Sync with bgfx upstream revision b91d0b6

* Sync with bx upstream revision d60912b

* Sync with bimg upstream revision bd81f60

* Add astc-codec decoder

* Rename VertexDecl to VertexLayout

* Rename UniformType enum Int1 to Sampler.

* Add NVN stub

* Fix unused-const-variable error on macOS

* Drop redundant explicit language parameters
buildoptions_cpp are only applied to c++ files and buildoptions_objcpp are only
applied to objective c++ files. As such, hardcoding -x offers no benefit while
preventing overrides (such as one needed by 3rdparty/bgfx/src/renderer_vk.cpp on
macOS) from working.

* Re-introduce -x c++ in places where C code is compiled as C++ to prevent clang from throwing a warning

* Build bgfx as Objective-C++ on macOS
It is needed due to included headers

* Enable Direct3D12 and Vulkan bgfx rendering backends

* Enable building of spirv shaders

* Properly escape /c in cmd call

* Comment out dx12 bgfx renderer

* Honor VERBOSE setting during shaders build

* Only invert hlsl shader XYZ_TO_sRGB matrix for opengl

* Add spirv shaders

* OpenGL ES needs transposed matrix too

* Metal needs transposed matrix as well
2019-10-13 07:50:38 -04:00

60 lines
1.5 KiB
C++

/*
* Copyright 2013 Jeremie Roy. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
#ifndef TEXT_METRICS_H_HEADER_GUARD
#define TEXT_METRICS_H_HEADER_GUARD
#include "font_manager.h"
class TextMetrics
{
public:
TextMetrics(FontManager* _fontManager);
/// Append an ASCII/utf-8 string to the metrics helper.
void appendText(FontHandle _fontHandle, const char* _string);
/// Append a wide char string to the metrics helper.
void appendText(FontHandle _fontHandle, const wchar_t* _string);
/// Return the width of the measured text.
float getWidth() const { return m_width; }
/// Return the height of the measured text.
float getHeight() const { return m_height; }
/// Clear the width and height of the measured text.
void clearText();
private:
FontManager* m_fontManager;
float m_width;
float m_height;
float m_x;
float m_lineHeight;
float m_lineGap;
};
/// Compute text crop area for text using a single font.
class TextLineMetrics
{
public:
TextLineMetrics(const FontInfo& _fontInfo);
/// Return the height of a line of text using the given font.
float getLineHeight() const { return m_lineHeight; }
/// Return the number of text line in the given text.
uint32_t getLineCount(const bx::StringView& _string) const;
/// Return the first and last character visible in the [_firstLine, _lastLine] range.
void getSubText(const bx::StringView& _str, uint32_t _firstLine, uint32_t _lastLine, const char*& _begin, const char*& _end);
private:
float m_lineHeight;
};
#endif // TEXT_METRICS_H_HEADER_GUARD