mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-09-21 12:30:16 +02:00
302 lines
7.3 KiB
HTML
302 lines
7.3 KiB
HTML
<HTML>
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<HEAD>
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<TITLE>Image Scanner Application</TITLE>
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</HEAD>
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<BODY>
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<P>
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This is a simple test page for the HP 6300C USB scanner.
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</P>
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<TABLE>
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<TR>
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<TD>
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<CENTER>
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<EMBED type="application/X-sane-plugin"
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name="scanner"
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onScanComplete="ScanCompleteCallback()"
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onInitComplete="InitCompleteCallback()"
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device="hp:/dev/usbscanner"
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width="300" height="413"
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line_width="4" line_style="solid">
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</CENTER>
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</TD>
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<TD>
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<CENTER>
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<!-- Pan zoom box -->
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<INPUT type="button" onclick="panRegionVert(-10)"
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value="Pan Up" ><BR>
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<INPUT type="button" onclick="panRegionHor(-10)"
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value="Pan Left" >
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<INPUT type="button" onclick="panRegionHor(10)"
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value="Pan Right" ><BR>
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<INPUT type="button" onclick="panRegionVert(10)"
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value="Pan Down" ><BR><BR>
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<!-- Zoom in/out -->
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<INPUT type="button" onclick="adjustRegion(-10)"
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value="Zoom In" >
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<INPUT type="button" onclick="adjustRegion(10)"
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value="Zoom Out" ><BR><BR>
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<!-- Scanner controls -->
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<INPUT type="button" onclick="ScanHi()"
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value="Scan Selected Region">
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<INPUT type="button" onclick="GetPreview()"
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value="Preview"><BR>
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<INPUT type="button" onclick="Save()"
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value="Save Current Image"><br><br>
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<!-- SANE test -->
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<INPUT type="button" onclick="doDump()"
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value="Dump">
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</CENTER>
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</TD>
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</TR>
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</TABLE>
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<TEXTAREA id="status" rows="20" cols="80"></TEXTAREA>
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<SCRIPT>
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// globals
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var inscan = true;
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var br_x = 0, br_y = 0, tl_x = 0, tl_y = 0;
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var max_br_x = 0, max_br_y = 0;
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var last_br_x, last_br_y, last_tl_x, last_tl_y;
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function sdump(str)
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{
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var status = document.getElementById('status');
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status.value = str;
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dump(str + "\n");
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}
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function doDump()
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{
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try {
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var aScanner = document.scanner.nsISanePluginInstance;
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sdump("ActiveDevice = " + aScanner.ActiveDevice + "\n" +
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"State = " + aScanner.State + "\n" +
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"Quality = " + aScanner.Quality + "\n" +
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"Method = " + aScanner.Method + "\n" +
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"DeviceOptions = " + aScanner.DeviceOptions + "\n" +
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"ImageParameters = " + aScanner.ImageParameters + "\n" +
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"AvailableDevices = " + aScanner.AvailableDevices + "\n");
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} catch (ex) {
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sdump("Error trying to dump: \n" + ex + "\n");
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}
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}
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function adjustRegion(factor) {
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try {
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var aScanner = document.scanner.nsISanePluginInstance;
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var x, y, height, width;
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x = aScanner.ZoomX;
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y = aScanner.ZoomY;
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width = aScanner.ZoomWidth
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+ factor;
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height = Math.floor(width * 413/300);
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aScanner.Crop(x, y, width, height);
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} catch (ex) {
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dump("Unable to zoom by " + factor + "\n" + ex + "\n");
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}
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}
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function panRegionHor(factor) {
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try {
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var x, y, height, width;
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var aScanner = document.scanner.nsISanePluginInstance;
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if (aScanner.ZoomX + factor < 0)
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x = aScanner.ZoomX;
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else
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x = aScanner.ZoomX + factor;
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y = aScanner.ZoomY;
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width = aScanner.ZoomWidth;
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height = aScanner.ZoomHeight;
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aScanner.Crop(x, y, width, height);
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} catch (ex) {
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dump("Unable to pan to requested location!\n");
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}
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}
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function panRegionVert(factor) {
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try {
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var x, y, height, width;
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var aScanner = document.scanner.nsISanePluginInstance;
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if (aScanner.ZoomY + factor < 0)
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y = aScanner.ZoomY;
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else
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y = aScanner.ZoomY + factor;
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x = aScanner.ZoomX;
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width = aScanner.ZoomWidth;
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height = aScanner.ZoomHeight;
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aScanner.Crop(x, y, width, height);
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} catch (ex) {
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dump("Unable to pan to requested location!\n");
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}
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}
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function Save() {
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try {
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var aScanner = document.scanner.nsISanePluginInstance;
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aScanner.SaveImage();
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} catch (ex) {
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dump("Error trying to save current image!\n");
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}
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}
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function GetPreview()
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{
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if (inscan)
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return;
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try {
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var aScanner = document.scanner.nsISanePluginInstance;
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// Reset scan area for entire bed
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tl_x = tl_y = 0;
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br_x = max_br_x;
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br_y = max_br_y;
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aScanner.SetOption("tl-x", tl_x.toString(10));
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aScanner.SetOption("tl-y", tl_y.toString(10));
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aScanner.SetOption("br-x", br_x.toString(10));
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aScanner.SetOption("br-y", br_y.toString(10));
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// Set the lowest resolution the HP ScanJet 6300C supports
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aScanner.SetOption("mode", "Color");
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aScanner.SetOption("resolution", "12");
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inscan = true;
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aScanner.ScanImage();
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// Scanning is a threaded function, so getting here
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// only means that a scan operation was successfully started.
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} catch (ex) {
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dump("Error trying to get preview image!");
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}
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}
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function ScanHi()
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{
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if (inscan)
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return;
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try {
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var aScanner = document.scanner.nsISanePluginInstance;
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// store last scan area coordinates
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// so that Restore() knows what scan
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// area coordinates to restore to.
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last_br_x = br_x;
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last_br_y = br_y;
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last_tl_x = tl_x;
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last_tl_y = tl_y;
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// factors used in converting from zoom box
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// to scanner coordinates
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var xfactor = last_br_x/300;
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var yfactor = last_br_y/413;
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// zoom box coordinates
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var z_br_x = aScanner.ZoomWidth + aScanner.ZoomX;
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var z_br_y = aScanner.ZoomHeight + aScanner.ZoomY;
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var z_tl_x = aScanner.ZoomX;
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var z_tl_y = aScanner.ZoomY;
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br_x = Math.floor(z_br_x * xfactor);
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br_y = Math.floor(z_br_y * yfactor);
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tl_x = Math.floor((z_tl_x * xfactor) + last_tl_x);
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tl_y = Math.floor((z_tl_y * yfactor) + last_tl_y);
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last_br_x = br_x;
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last_br_y = br_y;
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last_tl_x = tl_x;
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last_tl_y = tl_y;
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// set the scan area for zoom box
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aScanner.SetOption("tl-x", tl_x);
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aScanner.SetOption("tl-y", tl_y);
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aScanner.SetOption("br-x", br_x);
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aScanner.SetOption("br-y", br_y);
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// For speed of testing, high resolution is set to
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// just 150dpi
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aScanner.SetOption("resolution", "150");
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inscan = true;
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aScanner.ScanImage();
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// Scanning is a threaded operation so getting here
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// only means that we have successfully started a scan.
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} catch (ex) {
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dump("Error trying to scan at 150!\n"+ ex + "\n");
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}
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}
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function ScanCompleteCallback()
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{
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inscan = false;
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dump("Completed Scan!\n");
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}
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function InitCompleteCallback()
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{
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// Additional device specific initialization
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try {
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var aScanner = document.scanner.nsISanePluginInstance;
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// Reset scan area for entire bed
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tl_x = tl_y = 0;
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br_x = max_br_x;
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br_y = max_br_y;
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aScanner.SetOption("tl-x", tl_x.toString(10));
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aScanner.SetOption("tl-y", tl_y.toString(10));
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aScanner.SetOption("br-x", br_x.toString(10));
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aScanner.SetOption("br-y", br_y.toString(10));
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// this particular scan seems to scan in a
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// a little dark by default
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aScanner.SetOption("brightness", "30");
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aScanner.SetOption("contrast", "10");
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aScanner.Quality = 80;
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aScanner.Method = "FAST";
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aScanner.SetOption("mode", "Color");
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// Set the maximum bottom x and bottom y
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// for the HP ScanJet 6300C
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last_br_x = br_x = max_br_x = 14141852;
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last_br_y = br_y = max_br_y = 19456836;
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last_tl_x = tl_x;
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last_tl_y = tl_y;
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inscan = false;
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} catch (ex) {
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dump("Error trying to set device specific initialization!\n");
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}
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}
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</SCRIPT>
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</BODY>
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</HTML>
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