public ProgressUpdateStateBlock(ProgressUpdateStateBlock rhs)
{ // Copy constructor
this.what = rhs.what;
this.pageSum = rhs.pageSum;
this.pageCurrent = rhs.pageCurrent;
this.pageInfo = rhs.pageInfo;
this.stagePercent = rhs.stagePercent;
this.stageInfo = rhs.stageInfo;
}
private void RollbackAnimation()
{
int progressPageValue = progressPage.Value;
int progressStageValue = progressStage.Value;
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Page;
state.pageInfo = @"Canceling...";
state.pageCurrent = progressPageValue;
state.pageSum = ProgressHandler.NumPages;
state.stageInfo = @"";
ProgressChanged(state);
for (int i = progressStageValue; i >= 0; --i)
{
if (progressStageValue > 0)
{
if (i > 5)
{ // Sleeping helps with human comprehension (but let's not over do it)
Thread.Sleep(1);
}
else
{ // Sleeping helps with human comprehension
Thread.Sleep(2);
}
state.what = ProgressUpdateState.Stage;
state.stagePercent = i;
ProgressChanged(state);
}
}
for (int i = progressPageValue; i >= 0; --i)
{
if (progressPageValue > 0)
{
if (i > 50)
{ // Sleeping helps with human comprehension (but let's not over do it)
Thread.Sleep(1);
}
else
{ // Sleeping helps with human comprehension
Thread.Sleep(2);
}
state.what = ProgressUpdateState.Page;
state.pageCurrent = i;
state.pageSum = ProgressHandler.NumPages;
ProgressChanged(state);
}
}
this.Close();
}
public void ProgressStageAssign(ProgressUpdateStateBlock state)
{ // Transfer the state (block) information to the control(s)...
// Updates (of the UI) will happen automatically (after assignment, per each)
if (state.stageInfo != null)
{
labelStageInfo.Text = state.stageInfo;
}
if (state.stagePercent > 0.0 && state.stagePercent <= 1.0)
{
progressStage.Value = (int)Math.Floor(progressStage.Maximum * state.stagePercent);
labelStagePercent.Text = String.Format("{0}%", progressStage.Value);
}
else
{
progressStage.Value = 0;
labelStagePercent.Text = @"";
}
}
public void ProgressPageAssign(ProgressUpdateStateBlock state)
{ // Transfer the state (block) information to the control(s)...
// Updates (of the UI) will happen automatically (after assignment, per each)
if (state.pageSum > 0 && progressPage.Maximum != state.pageSum)
{
progressPage.Maximum = state.pageSum;
}
if (state.pageInfo != null)
{
labelPageInfo.Text = state.pageInfo;
}
if (state.pageCurrent > 0)
{
if (state.pageCurrent > progressPage.Maximum)
{
state.pageCurrent = progressPage.Maximum;
}
progressPage.Value = state.pageCurrent;
}
}
public void ProgressChanged(ProgressUpdateStateBlock state)
{
switch (state.what)
{
case ProgressUpdateState.Page:
{
if (this.InvokeRequired)
{ // Consult: https://msdn.microsoft.com/en-us/library/2e08f6yc%28v=vs.110%29.aspx
object[] myArray = new object[1];
myArray[0] = new ProgressUpdateStateBlock(state);
progressPage.BeginInvoke(new ProgressDelegate(ProgressPageAssign), myArray);
}
else
{ // This needs to be present (albeit unlikely to ever execute)
if (state.pageInfo != null)
{
labelPageInfo.Text = state.pageInfo;
}
if (state.pageCurrent > 0)
{
if (state.pageCurrent > progressPage.Maximum)
{
state.pageCurrent = progressPage.Maximum;
}
progressPage.Value = state.pageCurrent;
}
}
break;
}
case ProgressUpdateState.Stage:
{
if (this.InvokeRequired)
{ // Consult: https://msdn.microsoft.com/en-us/library/2e08f6yc%28v=vs.110%29.aspx
object[] myArray = new object[1];
myArray[0] = new ProgressUpdateStateBlock(state);
progressStage.BeginInvoke(new ProgressDelegate(ProgressStageAssign), myArray);
}
else
{ // This needs to be present (albeit unlikely to ever execute)
if (state.stageInfo != null)
{
labelStageInfo.Text = state.stageInfo;
}
if (state.stagePercent > 0.0 && state.stagePercent <= 1.0)
{
progressStage.Value = (int)Math.Floor(progressStage.Maximum * state.stagePercent);
labelStagePercent.Text = String.Format("{0}%", state.stagePercent);
}
else
{
progressStage.Value = 0;
labelStagePercent.Text = @"";
}
}
break;
}
}
}
private void ReportProgress(int page, int totalPages, float stagePercent, string info, PrintProgressStage stage)
{ // The primary progress update handler...
switch (stage)
{
//
// If all one wants is a simple, per page progress bar ALL THAT NEEDS BE DONE
// is to switch on the PrintPage enumeration and present page count information.
// When doing so, do not forget to change the page from 0-based to 1-based notation.
// A value of -1 for either value means "not applicable". If one encounters -1,
// simply ignore the update process for page/NumPages during that encounter.
//
//
// APDFL cannot know how long things will take. So, any desire for an accurate
// or trivial 0-100% progress bar is a bit of a misnomer. The closest one can
// come to that sort of thing is to show page-level tracking (e.g., Page X of Y).
// NONE of the percentage (or page progression) values can ever be equated
// to any notion of time, remaining or otherwise.
//
// Performing simple math like:
//
// ((page / totalPages) * 100) * <median page time consumption thus far>
//
// ...will NOT accurately predict remaining time.
//
// Attempting to provide an estimate of time remaining (when printing or rendering)
// a PDF is a futile process. Unlike network transmission times for a known quantity,
// APDFL *cannot know* (and cannot be altered to know) how long the next page will
// take to process.
//
//
// TIP: When working on a solution that drives commercial digital print devices or
// a similar high throughput 24/7/365 "keep the planes in the air, not on the ground"
// environment...
//
// Flattening transparent artwork within the (greater) context of printing can be
// a bad idea.
//
// One should investigate structuring the solution so that artwork to be printed
// is pre-flattened (see FlattenPDF sample) and saved to a completely non-transparent
// PDF *first* (separately). Then, simply print the pre-flattened (temp) file for
// best performance. Separating these activities can greatly improve overall solution
// performance and (printing) predictability.
//
case PrintProgressStage.PrintPage:
{ // Happens twice...
// Once just before a page begins. Then again, just after the page ends.
// This is the case where one should update Page progress...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
if (state.stagePercent < 1.0)
{ // Start page...
state.what = ProgressUpdateState.Page;
state.pageCurrent = ((page > 1) ? page : 1);
state.pageSum = ((NumPages > 1) ? NumPages : 1);
state.pageInfo = String.Format("Page {0} of {1}", state.pageCurrent, state.pageSum);
ProgressUI.ProgressChanged(state);
Console.WriteLine(String.Format("Printing {0}.", state.pageInfo));
}
else
{ // End page...
// Reset the stage info at page end
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"";
state.stagePercent = 0;
ProgressUI.ProgressChanged(state);
}
break;
}
//
// ALL of the remaining enumeration values are optional.
// If not interested is presenting stage information to a human,
// the remaining case block(s) can be omitted entirely.
//
case PrintProgressStage.PrintProg_StreamingDocumentResource:
case PrintProgressStage.PrintProg_StreamingDocumentProcset:
{ // Downloading a (document level) PostScript dictionary (%%BeginProlog)...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "Preparing Document";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingDocumentFont:
case PrintProgressStage.PrintProg_StreamingPageFont:
{ // Downloading a font (info will contain the font name)...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
if (info.Length > 0)
{
state.stageInfo = String.Format("Downloading Font: {0}", info);
}
else
{
state.stageInfo = @"Downloading Font";
}
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageContent:
{ // Sending miscellaneous, page content...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Streaming Page Content";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageResource:
{ // Downloading a (page level) PostScript dictionary...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Streaming Page Resource";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageGradient:
{ // Downloading a gradient...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Streaming Page Gradient";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageImage:
case PrintProgressStage.PrintProg_StreamingPageImageProgressPercent:
{ // Downloading raster image data...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Streaming Page Image";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageImageOPI:
{ // Replacing an OPI proxy (only occurs when client provides additional OPI replacement callbacks)...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Replacing Open Prepress Interface (OPI) Proxy Image";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageSeparation:
{ // Sending a color separation (plate)...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Streaming Page Separation";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageCSA:
case PrintProgressStage.PrintProg_StreamingPageCRD:
{ // (Converting a ICC profile to and) Downloading (PostScript) ColorSpace Array or Color Rendering Dictionary...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = @"Streaming Page Content (CSA/CRD)";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintFlat_EnterInFlattener: // Start of flattener (0%)
case PrintProgressStage.PrintFlat_IdentifyingComplexityRegion:
case PrintProgressStage.PrintFlat_ComputingComplexityRegionClippath:
case PrintProgressStage.PrintFlat_EnterInPlanarMap:
case PrintProgressStage.PrintFlat_FlattenAtomicRegions:
{ // Flattener preparation activities...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "Flattening...";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintFlat_FindObjectsInvolvedInTransparency:
{ // (Flattener) Searching for Transparency...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "Searching for Transparent Art...";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintFlat_TextHeuristics:
{ // (Flattener) Calculating Text Interactions...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "Searching for Transparent Text...";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintFlat_RasterizingComplexityRegion:
{ // (Flattener) Rasterizing...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "Rasterizing Transparent Art...";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_OnHostTrapBeginPage:
case PrintProgressStage.PrintProg_BeginStreamingTraps:
{ // On-Host (not in-RIP) trapping activities...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "On-Host Trapping";
state.stagePercent = stagePercent;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingPageEpilogue:
{ // End of page activities (i.e., %%PageTrailer)...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.stageInfo = "Finalizing Page";
for (float i = 0.0F; i <= 1.0F; i += 0.25F)
{ // Emulate stage progression (when we only get a single call)
state.stagePercent = i;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(2);
}
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
break;
}
case PrintProgressStage.PrintProg_StreamingDocumentEpilogue:
{ // End of file activities (i.e., %%Trailer)...
ProgressUpdateStateBlock state = new ProgressUpdateStateBlock();
state.what = ProgressUpdateState.Stage;
state.pageInfo = "Finalizing Document";
for (float i = 0.0F; i <= 1.0F; i += 0.25F)
{ // Eemulate stage progression (when we only get a single call)
state.stagePercent = i;
ProgressUI.ProgressChanged(state);
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(2);
}
//
// Sleeping here helps with human comprehension
// of UI updates but slows printing throughput.
//
Thread.Sleep(10);
// Conclude the progress UI...
state.what = ProgressUpdateState.Page;
state.stageInfo = "Printing Complete";
state.pageCurrent = 0;
state.pageSum = 0;
break;
}
}
}