import java.awt.*; import java.io.*; import java.applet.*; // ========================================================================= // === class ColorData === // === store color data and do websafe conversion === // ========================================================================= class ColorData { private int colorlist[][]; private boolean websafe=false; public ColorData() { colorlist = new int[5][3]; colorlist[0][0] = 0; colorlist[0][1] = 128; colorlist[0][2] = 0; colorlist[1][0] = 0; colorlist[1][1] = 0; colorlist[1][2] = 0; colorlist[2][0] = 0; colorlist[2][1] = 0; colorlist[2][2] = 255; colorlist[3][0] = 128; colorlist[3][1] = 0; colorlist[3][2] = 128; colorlist[4][0] = 255; colorlist[4][1] = 0; colorlist[4][2] = 0; } public void setwebsafe(boolean ws) { websafe = ws; if(websafe) { websafecolor(0); websafecolor(1); websafecolor(2); websafecolor(3); websafecolor(4); } } public boolean getwebsafe() { return websafe; } public void websafecolor(int index) { int i; for(i=0;i<3;i++) { if(colorlist[index][i]<26) colorlist[index][i] = 0; else if(colorlist[index][i]<77) colorlist[index][i] = 51; else if(colorlist[index][i]<128) colorlist[index][i] = 102; else if(colorlist[index][i]<179) colorlist[index][i] = 153; else if(colorlist[index][i]<230) colorlist[index][i] = 204; else colorlist[index][i] = 255; } } public void setcolor(int which, int r, int g, int b) { colorlist[which][0] = r; colorlist[which][1] = g; colorlist[which][2] = b; if(websafe) websafecolor(which); } public void getcolor(int which, int color[]) { color[0] = colorlist[which][0]; color[1] = colorlist[which][1]; color[2] = colorlist[which][2]; } } // ========================================================================= // === class SampleDoc === // === draw sample document showing selected web colors === // ========================================================================= class SampleDoc extends Canvas { private int imgw=0, imgh=0; private Image mainImage; private int fontsize=14; private ColorData colordata; public SampleDoc(ColorData cdata) { setFont(new Font("Helvetica", Font.BOLD, fontsize)); colordata = cdata; } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { int cx, cy, step; Rectangle boundrect = bounds(); Graphics holdg; int color[] = new int[3]; FontMetrics fm = g.getFontMetrics(getFont()); if(imgw!=boundrect.width || imgh!=boundrect.height) { mainImage=createImage(boundrect.width, boundrect.height); imgw = boundrect.width; imgh = boundrect.height; } holdg = g; if(mainImage!=null) g = mainImage.getGraphics(); step = (boundrect.height)/5; cy = step/2; cy += fontsize/2; // draw background colordata.getcolor(0, color); g.setColor(new Color(color[0], color[1], color[2])); g.fillRect(boundrect.x, boundrect.y, boundrect.width-2, boundrect.height-2); g.setColor(Color.black); g.drawRect(boundrect.x, boundrect.y, boundrect.width-2, boundrect.height-2); // background colordata.getcolor(1, color); g.setColor(new Color(color[0], color[1], color[2])); g.drawString("Background", 10, cy); cy += step; //text g.drawString("Text", 10, cy); cy += step; //link colordata.getcolor(2, color); g.setColor(new Color(color[0], color[1], color[2])); g.drawString("Link", 10, cy); g.drawLine(10, cy+2, 10+fm.stringWidth("Link"), cy+2); cy += step; //vlink colordata.getcolor(3, color); g.setColor(new Color(color[0], color[1], color[2])); g.drawString("Visited Link", 10, cy); g.drawLine(10, cy+2, 10+fm.stringWidth("Visited Link"), cy+2); cy += step; //alink colordata.getcolor(4, color); g.setColor(new Color(color[0], color[1], color[2])); g.drawString("Active Link", 10, cy); g.drawLine(10, cy+2, 10+fm.stringWidth("Active Link"), cy+2); if(mainImage!=null) { g = holdg; g.drawImage(mainImage, 0, 0, this); } } } // ========================================================================= // === class ColorWheel === // === color wheel control === // ========================================================================= class ColorWheel extends Canvas { private int brightness=100; private float pthue=(float)0.0, ptsat=(float)0.0; private int holdbright=999; private Image wheelImage; private Image mainImage; private int imgw=0, imgh=0; private ColorData colordata=null; private csapplet theApplet=null; private MyBrightbar brightbar=null; private Label brightlabel=null; private int curtarget = 0; private int rstep=12, astep=40; private float polydata[][] = new float[11][(rstep+1)*(astep+1)]; // TODO: does java have enums? private final int X1=0, X2=1, X3=2, X4=3; private final int Y1=4, Y2=5, Y3=6, Y4=7; private final int R=8, G=9, B=10; public ColorWheel(csapplet applet, ColorData cdata, MyBrightbar b, Label bl) { brightbar = b; brightlabel = bl; colordata = cdata; theApplet = applet; settarget(curtarget); buildpolygons(rstep, astep); } private void buildpolygons(int raddiv, int anglediv) { int index=0; int i, j, cx, cy, size; int istep; float radstep; Color tempcolor; int red, green, blue; int colorpack; float hue; float pt[][] = new float[2][2]; float cur[][] = new float[2][2]; float oldpt[][] = new float[2][2]; int gray[] = new int[3]; int color[] = new int[3]; float step[][] = new float[2][2]; float curfloat[][] = new float[2][2]; float colorfloat[] = new float[3]; float colorstep[] = new float[3]; istep = 360/anglediv; radstep = (float)(1.0/(float)raddiv); gray[0] = gray[1] = gray[2] = 255; pt[0][0] = (float)1.0; pt[0][1] = (float)0.0; step[0][0] = (float)(1.0/(float)raddiv); step[0][1] = (float)0.0; for(i=0;i<=360;i+=istep) { hue = (float)i/(float)360.0; if(hue==1.0) hue = (float)0.0; colorpack = Color.HSBtoRGB(hue, (float)1.0, (float)1.0); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); pt[1][0] = (float)(Math.cos((float)i*0.017453293)); pt[1][1] = (float)(Math.sin((float)i*0.017453293)); step[1][0] = (float)(pt[1][0])/(float)(raddiv); step[1][1] = (float)(pt[1][1])/(float)(raddiv); colorstep[0] = (float)(color[0]-gray[0])/(float)(raddiv); colorstep[1] = (float)(color[1]-gray[1])/(float)(raddiv); colorstep[2] = (float)(color[2]-gray[2])/(float)(raddiv); oldpt[0][0] = (float)0.0; oldpt[0][1] = (float)0.0; oldpt[1][0] = (float)0.0; oldpt[1][1] = (float)0.0; curfloat[0][0] = (float)0.0; curfloat[0][1] = (float)0.0; curfloat[1][0] = (float)0.0; curfloat[1][1] = (float)0.0; colorfloat[0] = (float)gray[0]; colorfloat[1] = (float)gray[1]; colorfloat[2] = (float)gray[2]; int temp = 1; temp = 1; for(j=0;j<=raddiv;j++) { cur[0][0] = curfloat[0][0]; cur[0][1] = curfloat[0][1]; cur[1][0] = curfloat[1][0]; cur[1][1] = curfloat[1][1]; curfloat[0][0] += step[0][0]; curfloat[0][1] += step[0][1]; curfloat[1][0] += step[1][0]; curfloat[1][1] += step[1][1]; red = (int)colorfloat[0]; green = (int)colorfloat[1]; blue = (int)colorfloat[2]; colorfloat[0] += colorstep[0]; colorfloat[1] += colorstep[1]; colorfloat[2] += colorstep[2]; polydata[X1][index] = oldpt[0][0]; polydata[Y1][index] = oldpt[0][1]; polydata[X2][index] = cur[0][0]; polydata[Y2][index] = cur[0][1]; polydata[X3][index] = cur[1][0]; polydata[Y3][index] = cur[1][1]; polydata[X4][index] = oldpt[1][0]; polydata[Y4][index] = oldpt[1][1]; polydata[R][index] = (float)red; polydata[G][index] = (float)green; polydata[B][index] = (float)blue; index++; oldpt[0][0] = cur[0][0]; oldpt[0][1] = cur[0][1]; oldpt[1][0] = cur[1][0]; oldpt[1][1] = cur[1][1]; } step[0][0] = step[1][0]; step[0][1] = step[1][1]; pt[0][0] = pt[1][0]; pt[0][1] = pt[1][1]; } } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { int cx, cy; Rectangle boundrect = bounds(); int colorpack; int color[] = new int[3]; int markx, marky; int rad, size; Graphics holdg; if(imgw!=bounds().width || imgh!=bounds().height) { mainImage=createImage(bounds().width, bounds().height); wheelImage=createImage(bounds().width, bounds().height); imgw = bounds().width; imgh = bounds().height; paintwheel(wheelImage.getGraphics()); holdbright = brightness; } else if(holdbright!=brightness) { paintwheel(wheelImage.getGraphics()); holdbright = brightness; } holdg = g; if(mainImage!=null) g = mainImage.getGraphics(); cx = boundrect.x + boundrect.width/2; cy = boundrect.y + boundrect.height/2; size = Math.min(boundrect.width, boundrect.height) - 4; rad = size/2; /*draw marker*/ if(wheelImage!=null) g.drawImage(wheelImage, 0, 0, this); else paintwheel(g); markx = (int)((float)rad*ptsat*Math.cos(pthue*360.0*0.017453293)) + cx; marky = (int)((float)rad*ptsat*Math.sin(pthue*360.0*0.017453293)) + cy; g.setColor(Color.white); g.drawOval(markx-3, marky-3, 6, 6); g.setColor(Color.black); g.drawOval(markx-4, marky-4, 8, 8); g.drawOval(markx-2, marky-2, 4, 4); /*draw swatch*/ colorpack = Color.HSBtoRGB(pthue, ptsat, ((float)brightness/(float)100.0)); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); g.setColor(new Color(color[0], color[1], color[2])); g.fillRect( cx+boundrect.width/2-20, cy+boundrect.height/2-20, 18, 18 ); g.setColor(Color.black); g.drawRect( cx+boundrect.width/2-20, cy+boundrect.height/2-20, 18, 18 ); if(mainImage!=null) { g = holdg; g.drawImage(mainImage, 0, 0, this); } } public void paintwheel(Graphics g) { int i, cx, cy, size, rad; int red, green, blue; Rectangle boundrect = bounds(); cx = boundrect.x + boundrect.width/2; cy = boundrect.y + boundrect.height/2; size = Math.min(boundrect.width, boundrect.height) - 4; rad = size/2; for(i=0;i<(rstep+1)*(astep+1);i++) { Polygon p = new Polygon(); p.addPoint(cx+(int)((float)rad*polydata[X1][i]), cy+(int)((float)rad*polydata[Y1][i])); p.addPoint(cx+(int)((float)rad*polydata[X2][i]), cy+(int)((float)rad*polydata[Y2][i])); p.addPoint(cx+(int)((float)rad*polydata[X3][i]), cy+(int)((float)rad*polydata[Y3][i])); p.addPoint(cx+(int)((float)rad*polydata[X4][i]), cy+(int)((float)rad*polydata[Y4][i])); red = (int)(polydata[8][i]*brightness*0.01); green = (int)(polydata[9][i]*brightness*0.01); blue = (int)(polydata[10][i]*brightness*0.01); g.setColor(new Color(red, green, blue)); g.fillPolygon(p); } } public void setbrightness(int b) { int colorpack; int color[] = new int[3]; brightness = b; repaint(); colorpack = Color.HSBtoRGB(pthue, ptsat, ((float)brightness/(float)100.0)); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); colordata.setcolor(curtarget, color[0], color[1], color[2]); } public void settarget(int t) { curtarget = t; float hsbcolor[]; int color[] = new int[3]; colordata.getcolor(curtarget, color); hsbcolor = Color.RGBtoHSB(color[0], color[1], color[2], null); pthue = hsbcolor[0]; ptsat = hsbcolor[1]; brightness = (int)(hsbcolor[2]*100.0); brightbar.setvalue(brightness); brightlabel.setText("Brightness " + brightness); int colorpack = Color.HSBtoRGB(pthue, ptsat, 1.0f); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); brightbar.setcolor(color[0], color[1], color[2]); repaint(); } public void forceupdate() { float hsbcolor[]; int color[] = new int[3]; colordata.getcolor(curtarget, color); hsbcolor = Color.RGBtoHSB(color[0], color[1], color[2], null); pthue = hsbcolor[0]; ptsat = hsbcolor[1]; brightness = (int)(hsbcolor[2]*100.0); brightbar.setvalue(brightness); brightlabel.setText("Brightness " + brightness); int colorpack = Color.HSBtoRGB(pthue, ptsat, 1.0f); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); brightbar.setcolor(color[0], color[1], color[2]); repaint(); } public boolean mouseDown(Event evt, int x, int y) { pointplace(x, y); return true; } public boolean mouseDrag(Event evt, int x, int y) { pointplace(x, y); return true; } public void pointplace(int x, int y) { int cx, cy; Rectangle boundrect = bounds(); int size, rad; int dx, dy; int colorpack; int color[] = new int[3]; cx = boundrect.x + boundrect.width/2; cy = boundrect.y + boundrect.height/2; size = Math.min(boundrect.width, boundrect.height) - 4; rad = size/2; dx = x-cx; dy = y-cy; ptsat = (float)((Math.sqrt((float)((dx)*(dx) + (dy)*(dy))))/((float)rad)); if(ptsat<0.0) ptsat = (float)0.0; else if(ptsat>1.0) ptsat = (float)1.0; if(dx>=0 && dy>=0) pthue = (float)(Math.atan((float)(dy)/(float)(dx))*(180.0/Math.PI)/(360.0)); else if(dx<0 && dy>=0) pthue = (float)(0.5-(Math.atan((float)(dy)/(float)(-dx))*(180.0/Math.PI)/(360.0))); else if(dx<0 && dy<0) pthue = (float)(0.5+(Math.atan((float)(dy)/(float)(dx))*(180.0/Math.PI)/(360.0))); else if(dx>=0 && dy<0) pthue = (float)(1.0-(Math.atan((float)(-dy)/(float)(dx))*(180.0/Math.PI)/(360.0))); else pthue = (float)0.0; if(pthue<0.0) pthue = (float)0.0; else if(pthue>1.0) pthue = (float)1.0; repaint(); colorpack = Color.HSBtoRGB(pthue, ptsat, ((float)brightness/(float)100.0)); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); colordata.setcolor(curtarget, color[0], color[1], color[2]); theApplet.updatetext(); colorpack = Color.HSBtoRGB(pthue, ptsat, 1.0f); color[0] = ((colorpack & 0x00ff0000) >> 16); color[1] = ((colorpack & 0x0000ff00) >> 8); color[2] = ((colorpack & 0x000000ff)); brightbar.setcolor(color[0], color[1], color[2]); } } // ========================================================================= // === class MyBrightbar === // === brightness slider control === // ========================================================================= class MyBrightbar extends Canvas { private int min=0; private int max=0; private int val=0; private Image mainImage; private int imgw=0, imgh=0; private int red=255, green=255, blue=255; private ColorData colordata; public MyBrightbar(int inmin, int inmax, int inval) { min = inmin; max = inmax; val = inval; } public void setmin(int inmin) {min = inmin; repaint();} public void setmax(int inmax) {max = inmax; repaint();} public void setvalue(int inval) {val = inval; repaint();} public int getmin() {return min;} public int getmax() {return max;} public int getvalue() {return val;} public void setcolor(int c1, int c2, int c3) { red = c1; green = c2; blue = c3; repaint(); } public void update(Graphics g) { paint(g); } public void paint(Graphics g) { int cx, cy; Rectangle boundrect = bounds(); int color[] = new int[3]; int markx, marky; int rad, size; Graphics holdg; if(imgw!=boundrect.width || imgh!=boundrect.height) { mainImage=createImage(boundrect.width, boundrect.height); imgw = boundrect.width; imgh = boundrect.height; } holdg = g; if(mainImage!=null) g = mainImage.getGraphics(); int t = 2, l = 8, b = boundrect.height-4, r = boundrect.width-8; int x, i, div=60; g.setColor(Color.white); g.fillRect(0, 0, boundrect.width, boundrect.height); for(i=0;imax) val = max; repaint(); Event event = new Event(this, Event.ACTION_EVENT, (Object)this); deliverEvent(event); } } // ========================================================================= // === class csapplet === // === main applet class === // ========================================================================= public class csapplet extends Applet { private Label brightnessLabel; private MyBrightbar brightness; private TextField tagtext; private ColorWheel cw; private SampleDoc sd; private Checkbox colorcheck[]; private TextField colortext[]; private Checkbox websafecheck; private Checkbox tagcasecheck; private Checkbox tagfontcheck; private String typestr[]; private boolean tagcase=true; private boolean tagfont=false; private ColorData colordata; private void add(Component c, GridBagLayout gbl, GridBagConstraints gbc, int x, int y, int w , int h) { gbc.gridx = x; gbc.gridy = y; gbc.gridwidth = w; gbc.gridheight = h; gbl.setConstraints(c, gbc); add(c); } public void init() { Panel p; Font f = new Font("Courier", Font.PLAIN, 9); GridBagLayout gbl = new GridBagLayout(); GridBagConstraints gbc = new GridBagConstraints(); typestr = new String[5]; typestr[0] = "BGCOLOR"; typestr[1] = "TEXT"; typestr[2] = "LINK"; typestr[3] = "VLINK"; typestr[4] = "ALINK"; colordata = new ColorData(); setLayout(gbl); gbc.fill = GridBagConstraints.BOTH; gbc.weightx = 100; brightness = new MyBrightbar(0, 100, 100); brightnessLabel = new Label("Brightness 100"); tagtext = new TextField(); tagtext.setFont(f); sd = new SampleDoc(colordata); p = new Panel(); p.setLayout(new GridLayout(2, 1)); p.add(brightnessLabel); p.add(brightness); gbc.weighty = 0; add(p, gbl, gbc, 0, 5, 3, 1); p = new Panel(); p.setLayout(new GridLayout(1, 1)); p.add(cw = new ColorWheel(this, colordata, brightness, brightnessLabel)); gbc.weighty = 100; add(p, gbl, gbc, 0, 1, 3, 4); colorcheck = new Checkbox[5]; p = new Panel(); p.setLayout(new FlowLayout()); CheckboxGroup group = new CheckboxGroup(); p.add(colorcheck[0] = new Checkbox("Background", group, true )); p.add(colorcheck[1] = new Checkbox("Text", group, false)); p.add(colorcheck[2] = new Checkbox("Link", group, false)); p.add(colorcheck[3] = new Checkbox("VLink", group, false)); p.add(colorcheck[4] = new Checkbox("ALink", group, false)); gbc.weighty = 0; gbc.weightx = 100; add(p, gbl, gbc, 0, 6, 5, 1); p = new Panel(); p.setLayout(new GridLayout(1, 1)); p.add(sd); gbc.weighty = 100; gbc.weightx = 70; add(p, gbl, gbc, 3, 1, 1, 5); colortext = new TextField[5]; f = new Font("Courier", Font.PLAIN, 12); p = new Panel(); p.setLayout(new GridLayout(9, 1)); p.add(colortext[0] = new TextField()); p.add(new Label()); p.add(colortext[1] = new TextField()); p.add(new Label()); p.add(colortext[2] = new TextField()); p.add(new Label()); p.add(colortext[3] = new TextField()); p.add(new Label()); p.add(colortext[4] = new TextField()); colortext[0].setFont(f); colortext[1].setFont(f); colortext[2].setFont(f); colortext[3].setFont(f); colortext[4].setFont(f); gbc.weighty = 0; gbc.weightx = 30; add(p, gbl, gbc, 4, 1, 1, 5); gbc.weighty = 0; add(tagtext, gbl, gbc, 0, 7, 5, 1); gbc.weighty = 0; gbc.fill = GridBagConstraints.NONE; gbc.anchor = GridBagConstraints.WEST; add(new Label("Sample Document"), gbl, gbc, 3, 0, 2, 1); add(new Label("ColorServe Java 1.2"), gbl, gbc, 0, 0, 3, 1); gbc.weightx = 0; gbc.anchor = GridBagConstraints.WEST; p = new Panel(); p.setLayout(new GridLayout(1,3)); p.add((websafecheck = new Checkbox("Web safe", null, false))); p.add((tagcasecheck = new Checkbox("Upper case", null, tagcase))); p.add((tagfontcheck = new Checkbox("Large font", null, tagfont))); add(p, gbl, gbc, 0, 8, 4, 1); gbc.anchor = GridBagConstraints.EAST; add(new Label("Brian Hall"), gbl, gbc, 4, 8, 3, 1); updatecolorwheel(); } private int hextoint(String colorstring) { String upstring = colorstring.toUpperCase(); int n=0; char c; c = upstring.charAt(0); if(c>='0' && c<='9') n += (c - '0') * 16; else if(c>='A' && c<='F') n += (c - 'A' + 10) * 16; c = upstring.charAt(1); if(c>='0' && c<='9') n += (c - '0'); else if(c>='A' && c<='F') n += (c - 'A' + 10); return n; } private void parsecolor(String text, String token, int which) { int i; int find = text.indexOf(token); String numstr=""; if(find>=0) { find+=token.length(); if(find=6) { r = hextoint(colorstring.substring(0, 2)); g = hextoint(colorstring.substring(2, 4)); b = hextoint(colorstring.substring(4, 6)); colordata.setcolor(i, r, g, b); } updatecolorwheel(); return true; } else if(evt.target.equals(colorcheck[i])) { cw.settarget(i); updatetext(); return true; } } if(evt.target.equals(brightness)) { brightnessLabel.setText("Brightness " + brightness.getvalue()); cw.setbrightness(brightness.getvalue()); updatetext(); } else if(evt.target.equals(websafecheck)) { colordata.setwebsafe(websafecheck.getState()); updatecolorwheel(); } else if(evt.target.equals(tagtext)) { parsebodytag(tagtext.getText().toUpperCase()); updatecolorwheel(); } else if(evt.target.equals(tagcasecheck)) { tagcase = tagcasecheck.getState(); updatetext(); } else if(evt.target.equals(tagfontcheck)) { tagfont = tagfontcheck.getState(); if(tagfont) tagtext.setFont(new Font("Courier", Font.PLAIN, 12)); else tagtext.setFont(new Font("Courier", Font.PLAIN, 9)); } else return super.action(evt, arg); return true; } public void updatecolorwheel() { updatetext(); cw.forceupdate(); } public void updatetext() { int color[] = new int[3]; String rstr, gstr, bstr; String tagstr = "