245 lines
6.9 KiB
C++
245 lines
6.9 KiB
C++
/*
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* Copyright 2013 Jeremie Roy. All rights reserved.
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* License: http://www.opensource.org/licenses/BSD-2-Clause
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*/
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#include "common.h"
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#include <bgfx.h>
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#include <bx/timer.h>
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#include <bx/countof.h>
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#include <bx/string.h>
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#include "entry.h"
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#include "dbg.h"
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#include "fpumath.h"
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#include "processevents.h"
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#include "font/font_manager.h"
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#include "font/text_buffer_manager.h"
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#include <stdio.h>
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#include <wchar.h>
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TrueTypeHandle loadTtf(FontManager* _fm, const char* _fontPath)
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{
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FILE* pFile;
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pFile = fopen(_fontPath, "rb");
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if (NULL != pFile)
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{
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if (0 == fseek(pFile, 0L, SEEK_END) )
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{
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// Get the size of the file.
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long bufsize = ftell(pFile);
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if (bufsize == -1)
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{
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fclose(pFile);
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TrueTypeHandle invalid = BGFX_INVALID_HANDLE;
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return invalid;
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}
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uint8_t* buffer = new uint8_t[bufsize];
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// Go back to the start of the file.
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fseek(pFile, 0L, SEEK_SET);
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// Read the entire file into memory.
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uint32_t newLen = fread( (void*)buffer, sizeof(char), bufsize, pFile);
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if (newLen == 0)
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{
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fclose(pFile);
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delete[] buffer;
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TrueTypeHandle invalid = BGFX_INVALID_HANDLE;
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return invalid;
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}
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fclose(pFile);
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return _fm->createTtf(buffer, bufsize);
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}
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}
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TrueTypeHandle invalid = BGFX_INVALID_HANDLE;
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return invalid;
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}
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int _main_(int /*_argc*/, char** /*_argv*/)
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{
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uint32_t width = 1280;
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uint32_t height = 720;
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uint32_t debug = BGFX_DEBUG_TEXT;
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uint32_t reset = BGFX_RESET_VSYNC;
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bgfx::init();
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bgfx::reset(width, height, reset);
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// Enable debug text.
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bgfx::setDebug(debug);
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// Set view 0 clear state.
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bgfx::setViewClear(0
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, BGFX_CLEAR_COLOR_BIT | BGFX_CLEAR_DEPTH_BIT
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, 0x303030ff
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, 1.0f
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, 0
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);
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// Init the text rendering system.
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FontManager* fontManager = new FontManager(512);
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TextBufferManager* textBufferManager = new TextBufferManager(fontManager);
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// Load some TTF files.
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const char* fontNames[7] =
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{
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"font/droidsans.ttf",
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"font/chp-fire.ttf",
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"font/bleeding_cowboys.ttf",
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"font/mias_scribblings.ttf",
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"font/ruritania.ttf",
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"font/signika-regular.ttf",
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"font/five_minutes.otf"
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};
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const uint32_t fontCount = countof(fontNames);
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TrueTypeHandle fontFiles[fontCount];
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FontHandle fonts[fontCount];
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for (uint32_t ii = 0; ii < fontCount; ++ii)
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{
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// Instantiate a usable font.
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fontFiles[ii] = loadTtf(fontManager, fontNames[ii]);
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fonts[ii] = fontManager->createFontByPixelSize(fontFiles[ii], 0, 32);
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// Preload glyphs and blit them to atlas.
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fontManager->preloadGlyph(fonts[ii], L"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ. \n");
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// You can unload the truetype files at this stage, but in that
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// case, the set of glyph's will be limited to the set of preloaded
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// glyph.
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fontManager->destroyTtf(fontFiles[ii]);
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}
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TrueTypeHandle console_tt = loadTtf(fontManager, "font/visitor1.ttf");
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// This font doesn't have any preloaded glyph's but the truetype file
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// is loaded so glyph will be generated as needed.
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FontHandle consola_16 = fontManager->createFontByPixelSize(console_tt, 0, 10);
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//create a static text buffer compatible with alpha font
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//a static text buffer content cannot be modified after its first submit.
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TextBufferHandle staticText = textBufferManager->createTextBuffer(FONT_TYPE_ALPHA, STATIC);
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// The pen position represent the top left of the box of the first line
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// of text.
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textBufferManager->setPenPosition(staticText, 24.0f, 100.0f);
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for (uint32_t ii = 0; ii < fontCount; ++ii)
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{
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// Add some text to the buffer.
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// The position of the pen is adjusted when there is an endline.
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textBufferManager->appendText(staticText, fonts[ii], L"The quick brown fox jumps over the lazy dog\n");
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}
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// Now write some styled text.
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// Setup style colors.
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textBufferManager->setBackgroundColor(staticText, 0x551111FF);
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textBufferManager->setUnderlineColor(staticText, 0xFF2222FF);
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textBufferManager->setOverlineColor(staticText, 0x2222FFFF);
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textBufferManager->setStrikeThroughColor(staticText, 0x22FF22FF);
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// Background.
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textBufferManager->setStyle(staticText, STYLE_BACKGROUND);
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textBufferManager->appendText(staticText, fonts[0], L"The quick ");
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// Strike-through.
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textBufferManager->setStyle(staticText, STYLE_STRIKE_THROUGH);
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textBufferManager->appendText(staticText, fonts[0], L"brown fox ");
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// Overline.
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textBufferManager->setStyle(staticText, STYLE_OVERLINE);
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textBufferManager->appendText(staticText, fonts[0], L"jumps over ");
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// Underline.
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textBufferManager->setStyle(staticText, STYLE_UNDERLINE);
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textBufferManager->appendText(staticText, fonts[0], L"the lazy ");
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// Background + strike-through.
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textBufferManager->setStyle(staticText, STYLE_BACKGROUND | STYLE_STRIKE_THROUGH);
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textBufferManager->appendText(staticText, fonts[0], L"dog\n");
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// Create a transient buffer for real-time data.
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TextBufferHandle transientText = textBufferManager->createTextBuffer(FONT_TYPE_ALPHA, TRANSIENT);
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while (!processEvents(width, height, debug, reset) )
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{
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// Set view 0 default viewport.
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bgfx::setViewRect(0, 0, 0, width, height);
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// This dummy draw call is here to make sure that view 0 is cleared
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// if no other draw calls are submitted to view 0.
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bgfx::submit(0);
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int64_t now = bx::getHPCounter();
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static int64_t last = now;
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const int64_t frameTime = now - last;
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last = now;
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const double freq = double(bx::getHPFrequency() );
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const double toMs = 1000.0 / freq;
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// Use transient text to display debug information.
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wchar_t fpsText[64];
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bx::swnprintf(fpsText, countof(fpsText), L"Frame: % 7.3f[ms]", double(frameTime) * toMs);
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textBufferManager->clearTextBuffer(transientText);
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textBufferManager->setPenPosition(transientText, 20.0, 4.0f);
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textBufferManager->appendText(transientText, consola_16, L"bgfx/examples/10-font\n");
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textBufferManager->appendText(transientText, consola_16, L"Description: Use the font system to display text and styled text.\n");
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textBufferManager->appendText(transientText, consola_16, fpsText);
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float at[3] = { 0, 0, 0.0f };
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float eye[3] = {0, 0, -1.0f };
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float view[16];
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float proj[16];
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mtxLookAt(view, eye, at);
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// Setup a top-left ortho matrix for screen space drawing.
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float centering = 0.5f;
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mtxOrtho(proj, centering, width + centering, height + centering, centering, -1.0f, 1.0f);
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// Set view and projection matrix for view 0.
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bgfx::setViewTransform(0, view, proj);
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// Submit the debug text.
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textBufferManager->submitTextBuffer(transientText, 0);
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// Submit the static text.
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textBufferManager->submitTextBuffer(staticText, 0);
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// Advance to next frame. Rendering thread will be kicked to
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// process submitted rendering primitives.
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bgfx::frame();
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}
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fontManager->destroyTtf(console_tt);
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// Destroy the fonts.
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fontManager->destroyFont(consola_16);
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for (uint32_t ii = 0; ii < fontCount; ++ii)
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{
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fontManager->destroyFont(fonts[ii]);
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}
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textBufferManager->destroyTextBuffer(staticText);
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textBufferManager->destroyTextBuffer(transientText);
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delete textBufferManager;
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delete fontManager;
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// Shutdown bgfx.
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bgfx::shutdown();
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return 0;
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}
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