001package net.minecraft.util; 002 003import cpw.mods.fml.relauncher.Side; 004import cpw.mods.fml.relauncher.SideOnly; 005import java.awt.image.BufferedImage; 006import java.io.File; 007import java.nio.IntBuffer; 008import java.text.DateFormat; 009import java.text.SimpleDateFormat; 010import java.util.Date; 011import javax.imageio.ImageIO; 012import org.lwjgl.BufferUtils; 013import org.lwjgl.opengl.GL11; 014import org.lwjgl.opengl.GL12; 015 016@SideOnly(Side.CLIENT) 017public class ScreenShotHelper 018{ 019 private static final DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd_HH.mm.ss"); 020 private static IntBuffer field_74293_b; 021 private static int[] field_74294_c; 022 023 /** 024 * Takes a screenshot and saves it to the screenshots directory. Returns the filename of the screenshot. 025 */ 026 public static String saveScreenshot(File par0File, int par1, int par2) 027 { 028 return func_74292_a(par0File, (String)null, par1, par2); 029 } 030 031 public static String func_74292_a(File par0File, String par1Str, int par2, int par3) 032 { 033 try 034 { 035 File file2 = new File(par0File, "screenshots"); 036 file2.mkdir(); 037 int k = par2 * par3; 038 039 if (field_74293_b == null || field_74293_b.capacity() < k) 040 { 041 field_74293_b = BufferUtils.createIntBuffer(k); 042 field_74294_c = new int[k]; 043 } 044 045 GL11.glPixelStorei(GL11.GL_PACK_ALIGNMENT, 1); 046 GL11.glPixelStorei(GL11.GL_UNPACK_ALIGNMENT, 1); 047 field_74293_b.clear(); 048 GL11.glReadPixels(0, 0, par2, par3, GL12.GL_BGRA, GL12.GL_UNSIGNED_INT_8_8_8_8_REV, field_74293_b); 049 field_74293_b.get(field_74294_c); 050 func_74289_a(field_74294_c, par2, par3); 051 BufferedImage bufferedimage = new BufferedImage(par2, par3, 1); 052 bufferedimage.setRGB(0, 0, par2, par3, field_74294_c, 0, par2); 053 File file3; 054 055 if (par1Str == null) 056 { 057 file3 = func_74290_a(file2); 058 } 059 else 060 { 061 file3 = new File(file2, par1Str); 062 } 063 064 ImageIO.write(bufferedimage, "png", file3); 065 return "Saved screenshot as " + file3.getName(); 066 } 067 catch (Exception exception) 068 { 069 exception.printStackTrace(); 070 return "Failed to save: " + exception; 071 } 072 } 073 074 private static File func_74290_a(File par0File) 075 { 076 String s = dateFormat.format(new Date()).toString(); 077 int i = 1; 078 079 while (true) 080 { 081 File file2 = new File(par0File, s + (i == 1 ? "" : "_" + i) + ".png"); 082 083 if (!file2.exists()) 084 { 085 return file2; 086 } 087 088 ++i; 089 } 090 } 091 092 private static void func_74289_a(int[] par0ArrayOfInteger, int par1, int par2) 093 { 094 int[] aint1 = new int[par1]; 095 int k = par2 / 2; 096 097 for (int l = 0; l < k; ++l) 098 { 099 System.arraycopy(par0ArrayOfInteger, l * par1, aint1, 0, par1); 100 System.arraycopy(par0ArrayOfInteger, (par2 - 1 - l) * par1, par0ArrayOfInteger, l * par1, par1); 101 System.arraycopy(aint1, 0, par0ArrayOfInteger, (par2 - 1 - l) * par1, par1); 102 } 103 } 104}