camerademo.java

j2me源代码

                try {
                    fcsCtrl.setFocus(
                        focusModesInt[focusModes.getSelectedIndex()]);
                } catch (MediaException me) {
                    me.printStackTrace();
                }
            } else  if (zoomModesForm != null &&  zoomModesForm.isShown()) {                
                zomCtrl.setDigitalZoom(
                    zoomDigModesInt[zoomDigModes.getSelectedIndex()]);
                zomCtrl.setOpticalZoom(
                    zoomOptModesInt[zoomOptModes.getSelectedIndex()]);
                
            }
            display.setCurrent(vidForm);
        } else if (c == backToBrowserCommand) {
            display.setCurrent(browser);
            imageViewer.deleteAll();
            if (currImage != null) {
                try {
                    currImage.close();
                } catch(IOException ioe) {
                    ioe.printStackTrace();
                }  
            }
        } else if (c == saveSnapCommand) {            
            unfreezeSnpCtrl(true);
            vidForm.append("Picture has been saved to disk");
            savedMessageAppear = true;
        } else if (c == deleteSnapCommand) {
           unfreezeSnpCtrl(false);
        } else if (c == deleteImageFile) {
            new Thread(new Runnable() {
                public void run() {
                    imageViewer.deleteAll();
                    if (currImage != null) {
                        try {
                            currImage.delete();
                            currImage.close();
                        } catch(IOException ioe) {
                            ioe.printStackTrace();
                        }                
                    }
                    browser.delete(browser.getSelectedIndex());
                    display.setCurrent(browser);
                }
            }).start();
        }
        if (s == vidForm) {
            if (c == exitCommand) {
                destroyApp(false);
            } else if (c == snapCommand) {
                doSnapshot(NumOfPic);
            } else if (camCtrl != null && 
                        c == enabledShutterFeedbackCommand) {
                enabledShutterFeedback(true);
            } else if (camCtrl != null && 
                        c == disabledShutterFeedbackCommand) {
                enabledShutterFeedback(false);
            } else if (camCtrl != null && c == changeExposureCommand) {
                setExposureModes();
            } else if (camCtrl != null && c == setSupportedF_StopsCommand) {
                setSupportedF_Stops();
            } else if (camCtrl != null && c == setFlashModeCommand) {
                setFlashMode();
            } else if (camCtrl != null && c == setSnapshotCommand) {
                setSnapshotSettings();
            } else if (camCtrl != null && c == stopShottingCommand) {
                stopShooting();
            } else if (camCtrl != null && c == viewGalleryCommand) {
                new Thread(new Runnable() {
                    public void run() {
                        viewGallery();
                    }
                }).start();
            } else if (camCtrl != null && c == setFocusCommand) {
                focusSetting();
            } else if (camCtrl != null && c == setZoomCommand) {
                zoomSetting();
            }
        } else if (camCtrl != null && c == displayCommand) {
            new Thread(new Runnable() {
                public void run() {
                    viewImage();
                }
            }).start();
         }
    }
    
    private void stopShooting() {
        snpCtrl.stop();
    }
    
    
    private void unfreezeSnpCtrl(boolean save) {
        snpCtrl.unfreeze(save);                
        snapForm.deleteAll();
        vidForm.append(videoItem);
        display.setCurrent(vidForm);
    }
    
    /**
     * Show file list in the photos directory .
     */
    private void viewGallery() {
        if (PHOTOS_DIR == null) {
            PHOTOS_DIR = "file://" + snpCtrl.getDirectory();
        }
        Enumeration e;
        FileConnection photosDir = null;        
        try {
            photosDir = (FileConnection)Connector.open(PHOTOS_DIR);
            e = photosDir.list();
            browser = new List(snpCtrl.getDirectory(), List.IMPLICIT);
            while (e.hasMoreElements()) {
                String fileName = (String)e.nextElement();
                if (fileName.charAt(fileName.length()-1) == SEP) {
                    // This is directory
                } else {
                    // this is regular file
                    browser.append(fileName, null);
                }
            }
            
            if (photosDir != null) {
                photosDir.close();
            }
            browser.setSelectCommand(displayCommand);
            browser.addCommand(backCommand);
            browser.setCommandListener(this);
            display.setCurrent(browser);
        } catch (IOException ioe) {
            ioe.printStackTrace();
        }
    }
    
    private void viewImage() {
        if(browser.size() == 0) {
            return;
        }
        if(imageViewer == null) {
            imageViewer = new Form("Image Viewer");
            imageViewer.addCommand(backToBrowserCommand);
            imageViewer.addCommand(deleteImageFile);
            imageViewer.setCommandListener(this);
        }
        byte [] b;
        try {
            currImage = (FileConnection)
                    Connector.open(PHOTOS_DIR + SEP + 
                        browser.getString(browser.getSelectedIndex()));
            if (!currImage.exists()) {
                throw new IOException("Image file does not exists");
            }
            InputStream fis = currImage.openInputStream();
            int fileSize = (int)currImage.fileSize();
            b = new byte[fileSize];
            
            int length = fis.read(b, 0, fileSize);
            
            fis.close();                        
            
            if (b != null) {
                Image im = Image.createImage(b, 0, b.length);
                ImageItem imi = new ImageItem("", im, Item.	PLAIN, "");                
                imageViewer.append(imi);
            }
            
            display.setCurrent(imageViewer);
        } catch (Exception e) {
            e.printStackTrace();
        }
            
        
    }
    
    public void itemStateChanged(Item item) {
        if (savedMessageAppear == true && vidForm.size() > 1) {
            vidForm.delete(vidForm.size() - 1);
            savedMessageAppear = false;
        }
        try {
            if (item != null) {
                if (item == exposureModes) {
                    camCtrl.setExposureMode(exposureModes.getString(
                                        exposureModes.getSelectedIndex()));
                } else if (item == F_StopsCG) {
                    expCtrl.setFStop(Integer.parseInt(
                            F_StopsCG.getString(F_StopsCG.getSelectedIndex())));
                    int fpStop = expCtrl.getFStop();
                    int expTime = expCtrl.getExposureTime();
                    int EV = expCtrl.getExposureValue();
                    System.out.println("The EV is: " + EV);
                } else if (item == flashModes) {
                    String mode = 
                        flashModes.getString(flashModes.getSelectedIndex());
                    for (int i = 0; i < flashAllModes.length; i++) {
                        if (mode.equals(flashAllModes[i])) {
                            flsCtrl.setMode(i + 1);
                            break;
                        }
                    }
                }  else if (item == snapSetDisOrSave) {
                    if(snapSetDisOrSave.getSelectedIndex() == 0) {
                        NumOfPic = 0;
                        snapSetFreezeOrConfirm.setSelectedIndex(0, true);
                        if (snapshotSettingsForm.size() > 2) {
                            snapshotSettingsForm.delete(2);
                        }
                        if (snapshotSettingsForm.size() > 1) {
                            snapshotSettingsForm.delete(1);
                        }
                    } else {
                        NumOfPic = -2;
                        if (snapshotSettingsForm.size() == 1) {
                            snapshotSettingsForm.append(snapSetFreezeOrConfirm);
                            if (snapSetFreezeOrConfirm.getSelectedIndex() == 2) {
                                snapshotSettingsForm.append(burstNum);
                            }
                        }                     
                    }
                } else if (item == snapSetFreezeOrConfirm) {
                    if(snapSetFreezeOrConfirm.getSelectedIndex() == 0) {
                        if(snapshotSettingsForm.size() == 3) {
                            snapshotSettingsForm.delete(2);
                        }
                        NumOfPic = -2;
                    } else if(snapSetFreezeOrConfirm.getSelectedIndex() == 1) {
                        if(snapshotSettingsForm.size() == 3) {
                            snapshotSettingsForm.delete(2);
                        }
                        NumOfPic = -1;
                    } else if(snapSetFreezeOrConfirm.getSelectedIndex() == 2) {
                        snapshotSettingsForm.append(burstNum);
                        NumOfPic = 1;
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    private void doSnapshot(final int maxShots) {
        if (maxShots == 0) {
            doSnapshot();
            return;