184 lines
3.7 KiB
C++
184 lines
3.7 KiB
C++
//-------------------------------------------------------------------------------------
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//
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// JGE++ is a hardware accelerated 2D game SDK for PSP/Windows.
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//
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// Licensed under the BSD license, see LICENSE in JGE root for details.
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//
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// Copyright (c) 2007 James Hui (a.k.a. Dr.Watson) <jhkhui@gmail.com>
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//
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//-------------------------------------------------------------------------------------
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#include "../include/JLBFont.h"
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#include "../include/JFileSystem.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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JRenderer* JLBFont::mRenderer = NULL;
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JLBFont::JLBFont(const char *fontname, int lineheight, bool useVideoRAM)
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{
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mRenderer = JRenderer::GetInstance();
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mHeight = 0;
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mScale = 1.0f;
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mRotation = mSpacing = 0.0f;
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mTracking = 0.0f;
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mColor = ARGB(255,255,255,255);
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mTexture = NULL;
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mQuad = NULL;
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mBase = 0;
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char filename[256];
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short buffer[1024];
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sprintf(filename, "%s.dat", fontname);
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//FILE *file;
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JFileSystem *fileSys = JFileSystem::GetInstance();
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if (!fileSys->OpenFile(filename)) return;
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fileSys->ReadFile((u8 *)buffer, 2048);
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fileSys->CloseFile();
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sprintf(filename, "%s.png", fontname);
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mTexture = mRenderer->LoadTexture(filename, useVideoRAM);
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if (mTexture == NULL) return;
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mHeight = (float) lineheight;
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mQuad = new JQuad(mTexture, 0.0f, 0.0f, 16.0f, mHeight);
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float a, b, c;
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float y = 0.0f;
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float x;
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// there are 16x16 characters in the texture map.
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float cellHeight = mTexture->mHeight/16.0f;
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int n = 0;
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for (int i=0;i<16;i++)
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{
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for (int j=0;j<16;j++)
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{
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x = (float)buffer[n*4]; // x offset
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a = (float)buffer[n*4+1]; // character width
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b = (float)buffer[n*4+2];
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c = (float)buffer[n*4+3];
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mXPos[n] = x;
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mYPos[n] = y;
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mCharWidth[n] = a+b+c;
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n++;
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}
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y += cellHeight;
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}
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}
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JLBFont::~JLBFont()
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{
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if (mQuad)
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delete mQuad;
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if (mTexture)
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delete mTexture;
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// JGERelease();
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}
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void JLBFont::DrawString(const char *string, float x, float y, int align)
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{
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char *p = (char*)string;
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float dx = x, dy = y;
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if (mQuad == NULL) return;
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float width = GetStringWidth(string);
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if (align == JGETEXT_RIGHT)
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dx -= width;
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else if (align == JGETEXT_CENTER)
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dx -= width/2;
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dx = floorf(dx);
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dy = floorf(dy);
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int index;
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while (*p)
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{
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index = (*p - 32)+mBase;
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mQuad->SetTextureRect(mXPos[index], mYPos[index], mCharWidth[index], mHeight);
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mRenderer->RenderQuad(mQuad, dx, dy, mRotation, mScale, mScale);
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dx += (mCharWidth[index] + mTracking) * mScale;
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p++;
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}
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}
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void JLBFont::printf(float x, float y, const char *format, ...)
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{
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char buffer[PRINTF_BUFFER_SIZE];
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va_list list;
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va_start(list, format);
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vsprintf(buffer, format, list);
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va_end(list);
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DrawString(buffer, x, y);
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}
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void JLBFont::SetColor(PIXEL_TYPE color)
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{
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mColor = color;
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mQuad->SetColor(mColor);
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}
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float JLBFont::GetStringWidth(const char *string) const
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{
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float len = 0.0f;
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const char *p = string;
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char ch;
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while (*p)
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{
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ch = *p - 32;
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p++;
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if (ch < 0) continue;
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len += mCharWidth[ch+mBase] + mTracking;
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}
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len -= mTracking;
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return len*mScale;
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}
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void JLBFont::SetScale(float scale) { mScale = scale; }
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void JLBFont::SetRotation(float rot) { mRotation = rot; }
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void JLBFont::SetTracking(float tracking) { mTracking = tracking; }
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PIXEL_TYPE JLBFont::GetColor() const { return mColor; }
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float JLBFont::GetScale() const { return mScale; }
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float JLBFont::GetRotation() const { return mRotation; }
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float JLBFont::GetTracking() const { return mTracking; }
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float JLBFont::GetHeight() const { return mHeight; }
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void JLBFont::SetBase(int base)
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{
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mBase = (base==0)?0:128;
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}
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