How would I save a picture within any file (and not overwrite the existing data in it) and then be able to access it later? (for example, if it was the picture at the index of 0, you would access it by specifying 0 later, or hopefully something like that)
Use method:
bool QPixmap::save ( "fileName", const char * format = 0, int quality = -1 ) const
Related
I tried to get a script to create a text file that could write/add the images name, but the function
FileID = CreateFileForWriting(filename) does not work, it shows that was used by other process
I did not get this, is this function not right format or something is wrong, thx
Number Totaln
totaln=countdocumentwindowsoftype(5)
String filename, text
Number fileID
if (!SaveasDialog( "save text file as",getapplicationdirectory(2,0) + "Imagename.txt", filename))exit(0)
fileID = CreateFileForWriting(filename)
number i
for(i = 0; i <totaln; i++)
{
image imgSRC
imgSRC := GetFrontImage()
string imgname=getname(imgSRC)
WriteFile(fileID,"imgname")
Result("imgname")
}
Your code is nearly fine, but if you use the low-level API for file I/O you need to ensure that you close files you've opened or created.
Your script doesn't. Therefore, it runs fine exactly 1 time but will fail on re-run (when the file is still considered open.)
To fix it, you need to have closefile(fileID) at the end.
( BTW, if you script exits or throws after opening a file but before closing it, you have the same problem. )
However, I would strongly recommend not using the low-level API but the file streaming object instead. It also provides an automated file-closing mechanism so that you don't run into this issue.
Doing what you do in your script would be written as:
void writeCurrentImageNamesToText()
{
number nDoc = CountImageDocuments()
string filename
if (!SaveasDialog( "save text file as",getapplicationdirectory(2,0) + "Imagename.txt", filename)) return
number fileID = CreateFileForWriting(filename)
object fStream = NewStreamFromFileReference(fileID,1) // 1 for auto-close file when out of scope
for( number i = 0; i <nDoc; i++ ){
string name = GetImageDocument(i).ImageDocumentGetName()
fStream.StreamWriteAsText( 0, name + "\n" ) // 0 = use system encoding for text
}
}
writeCurrentImageNamesToText()
I've been gathering information using api calls from my jira. Information gathered is saved in a body file and it has the following content:
No tickets:
{"startAt":0,"maxResults":50,"total":0,"issues":[]}{"startAt":0,"maxResults":50,"total":0,"issues":[]}
One Ticket:
{"expand":"names,schema","startAt":0,"maxResults":50,"total":1,"issues":[{"expand":"operations,versionedRepresentations,editmeta,changelog,renderedFields","id":"456881","self":"https://myjira...com","key":"TICKET-1111","fields":{"summary":"[TICKET] New Test jira","created":"2018-12-17T01:47:09.000-0800"}}]}{"expand":"names,schema","startAt":0,"maxResults":50,"total":1,"issues":[{"expand":"operations,versionedRepresentations,editmeta,changelog,renderedFields","id":"456881","self":"https://myjira...com","key":"TICKET-1111","fields":{"summary":"[TICKET] New Test jira","created":"2018-12-17T01:47:09.000-0800"}}]}
Two Tickets:
{expand:schema,names,startAt:0,maxResults:50,total:2,issues:[{expand:operations,versionedRepresentations,editmeta,changelog,renderedFields,id:456881,self:https://myjira...com,key:TICKET-1111,fields:{summary:[TICKET] New Test jira,created:2018-12-17T01:47:09.000-0800}},{expand:operations,versionedRepresentations,editmeta,changelog,renderedFields,id:320281,self:https://myjira...com,key:TICKET-2222,fields:{summary:[TICKET] Test jira,created:2016-03-18T07:58:52.000-0700}}]}{expand:schema,names,startAt:0,maxResults:50,total:2,issues:[{expand:operations,versionedRepresentations,editmeta,changelog,renderedFields,id:456881,self:https://myjira...com,key:TICKET-1111,fields:{summary:[TICKET] New Test jira,created:2018-12-17T01:47:09.000-0800}},{expand:operations,versionedRepresentations,editmeta,changelog,renderedFields,id:320281,self:https://myjira...com,key:TICKET-2222,fields:{summary:[TICKET] Test jira,created:2016-03-18T07:58:52.000-0700}}]}
etc..
Using this code I've been able to gather total open tickets:
std::ifstream t("BodyOpenIssues.out");
std::string BodyString((std::istreambuf_iterator<char>(t)),
std::istreambuf_iterator<char>());
// Removing Quotes
BodyString.erase(std::remove(BodyString.begin(), BodyString.end(), '"'), BodyString.end());
int Result = 0;
unsigned first = BodyString.find("total:");
unsigned last = BodyString.find(",issues");
std::string TotalOpenIssues = BodyString.substr(first + 6, last - (first + 6));
Result = std::stoi(TotalOpenIssues);
return Result;
Using a second function I'm trying to get the keys based on total open tickets.
if (GetOpenIssuesNumber() > 0)
{
std::ifstream t("BodyOpenIssues.out");
std::string BodyString((std::istreambuf_iterator<char>(t)),
std::istreambuf_iterator<char>());
// Removing Quotes
BodyString.erase(std::remove(BodyString.begin(), BodyString.end(), '"'), BodyString.end());
unsigned first = BodyString.find("key:TICKET-");
unsigned last = BodyString.find(",fields");
std::string TotalOpenIssues = BodyString.substr(first + 11, last - (first + 11));
String^ Result = gcnew String(TotalOpenIssues.c_str());
return "TICKET-" + Result;
}
else
{
return "No open issues found";
}
What I mean is:
If Total is 1 to search from the beginning and find the first key TICKET-1111.
If Total is 2 to search from the beginning and get the first key TICKET-1111 then to continue from there and to find the next key TICKET-2222.
And based on that total to find that many keys in that string.
I got lost from all the casting between the types as ifstream reads the file and I save the result in std::string. After the find I save the result in System::String to use it in my Label.. I've been researching and found out that I can use char array but I can't make it dynamic based on BodyString.length().
If more information is required please let me know.
Any suggestions are really appreciated! Thank you in advance!
I went for nlohmann json library. It has everything I need. Thank you Walnut!
These are formatted as JSON. You should use a JSON library for C++ and parse the files with that. Using search/replace is unnecessary complicated and you will likely run into corner cases you haven't considered sooner or later (do you really want the code to randomly miss tickets, etc.?). Also String^ is not C++. Are you writing C++/CLI instead of C++? If so, please tag c++-cli instead of c++. – walnut
I want to re-project an HDF from UTM(WGS84) to sinusoidal（WGS84), so I try to use GDALAutoCreateWarpedVRT to finished it. The code is below:
hSrcDS = (GDALDataset*)GDALOpen("HJ1ACCD1.hdf", GA_ReadOnly);
const char *pszSrcWKT = NULL;
char* pszDstWKT = NULL;
//pszSrcWKT = ProjectionStr;
pszSrcWKT=GDALGetProjectionRef(hSrcDS);
CPLAssert( pszSrcWKT != NULL &&strlen(pszSrcWKT) > 0 );
OGRSpatialReference oSRS;
oSRS.SetSinusoidal(0,0,0);
oSRS.SetWellKnownGeogCS("WGS84");
oSRS.exportToWkt(&pszDstWKT );
GDALWarpOptions*psWarpOptions = GDALCreateWarpOptions();
psWarpOptions->dfWarpMemoryLimit=500*1024*1024;
hDstDS=(GDALDataset*)(GDALDataset*)GDALAutoCreateWarpedVRT(hSrcDS,pszSrcWKT,pszDstWKT,GRA_Bilinear ,20,psWarpOptions);
GDALDriver *poDriverTiff;
poDriverTiff=GetGDALDriverManager()->GetDriverByName("GTIFF");
poDriverTiff->CreateCopy("d:\\toto.tif",(GDALDataset*)hDstDS,false,NULL,NULL,NULL);
When I set oSRS.SetSinusoidal(0,0,0)，the result seems good, but the resolution is doubled (from 30 to 60). It's so weird.
According to the API docs for GDALAutoCreateWarpedVRT:
The GDALSuggestedWarpOutput() function is used to determine the bounds and resolution of the output virtual file which should be large enough to include all the input image
There is also a GDALSuggestedWarpOutput2() function to help suggest output file size for a similar set of requirements.
I am working on the Keil uv4 IDE with an ARM Cortex-M3 in a bare metal C application. I have a GUI that I created that is currently in English, but I would like to give the user the ability to go between other languages like you can on a cell phone.
I have created a structure with all the words that are used called string_table_t.
struct string_table_t
{
char *word1;
char *word2;
char *word3;
};
My thought process was to have plain text files for the different languages and the list of words used contained in each one. Then I would do a load function that would link the pointers of the string table with the actual word.
Now, my initial menu is created statically by defining it like so. It is based off of Altium software platform.
// Test structure
struct string_table_t string_table = {"Main Menu","test1","test2"};
form_t mainmenu_form =
{
.obj.x = 0,
.obj.y = 0,
.obj.width = 240,
.obj.height = 320,
.obj.draw = form_draw,
.obj.handler = mainmenu_form_handler,
.obj.parent = NULL,
.obj.agui_index = 0,
.obj.visible = __TRUE,
.obj.enabled = __TRUE,
.caption.x = 0,
.caption.y = 0,
.caption.text = "Main Menu",
.caption.font = &helveticaneueltstdltext18_2BPP,
.caption.color = RGB(230,230,230),
.caption_line_color = RGB(241,101,33),
.caption.fontstyle = FS_NONE,
.caption.align = ALIGN_CENTRE,
.captionbarcolor = RGB(88,89,91),
.children = mainmenu_children,
.n_children = 4,
.relief = RELIEF_NONE,
.color = RGB(65,64,66),
};
What I want to do is replace the "Main Menu" of the caption.text with string_table.word1. Therefore, if I load a different language set, the menu will automatically be pointing to the correct char array. Doing this currently results in a error expression must have a constant value.
Now, I can get this to work by leaving the text null in the menu component and adding:
Link_pointer_to_menu() {
mainmenu_form.caption.text = string_table.Main_menu_text;
}
This will compile and work, but I would rather not have to have 100 or so of these statements. Is there a more optimal way of doing this?
I would recommend something like that:
enum MyWords
{
msgHello,
msgOpen,
msgClose,
msgMainMenu,
num_Messages,
};
char *string_table_t[num_Messages];
You should write code that loads your language file and assigns pointers in this array. After that in your code:
.caption.text = string_table_t[msgMainMenu];
The idea is that you give each string a symbolic name that is an offset in the table of strings. After that you use this offset as an index into the table.
I am trying to write a program that will recognize an image on the screen, compare it against a resource library, and then calculate based on the result of the image source.
The first thing that I did was to create the capture screen function which looks like this:
private Bitmap Screenshot()
{
System.Drawing.Bitmap Table = new System.Drawing.Bitmap(88, 40, PixelFormat.Format32bppArgb);
System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(RouletteTable);
g.CopyFromScreen(1047, 44, 0, 0, Screen.PrimaryScreen.Bounds.Size);
return Table;
}
Then, I analyze this picture. The first method I used was to create two for loops and analyze both the bitmaps pixel by pixel. The problem with this method was time, it took a long time to complete 37 times. I looked around and found the convert to bytes and the convert to hash methods. This is the result:
public enum CompareResult
{
ciCompareOk,
ciPixelMismatch,
ciSizeMismatch
};
public CompareResult Compare(Bitmap bmp1, Bitmap bmp2)
{
CompareResult cr = CompareResult.ciCompareOk;
//Test to see if we have the same size of image
if (bmp1.Size != bmp2.Size)
{
cr = CompareResult.ciSizeMismatch;
}
else
{
//Convert each image to a byte array
System.Drawing.ImageConverter ic = new System.Drawing.ImageConverter();
byte[] btImage1 = new byte[1];
btImage1 = (byte[])ic.ConvertTo(bmp1, btImage1.GetType());
byte[] btImage2 = new byte[1];
btImage2 = (byte[])ic.ConvertTo(bmp2, btImage2.GetType());
//Compute a hash for each image
SHA256Managed shaM = new SHA256Managed();
byte[] hash1 = shaM.ComputeHash(btImage1);
byte[] hash2 = shaM.ComputeHash(btImage2);
for (int i = 0; i < hash1.Length && i < hash2.Length&& cr == CompareResult.ciCompareOk; i++)
{
if (hash1[i] != hash2[i])
cr = CompareResult.ciPixelMismatch;
}
}
return cr;
}
After I analyze the two bitmaps in this function, I call it in my main form with the following:
Bitmap Table = Screenshot();
CompareResult success0 = Compare(Properties.Resources.Result0, Table);
if (success0 == CompareResult.ciCompareOk)
{ double result = 0; Num.Text = result.ToString(); goto end; }
The problem I am getting is that once this has all been accomplished, I am always getting a cr value of ciPixelMismatch. I cannot get the images to match, even though the images are identical.
To give you a bit more background on the two bitmaps, they are approximately 88 by 40 pixels, and located at 1047, 44 on the screen. I wrote a part of the program to automatically take a picture of that area so I did not have to worry about the wrong location or size being captured:
Table.Save("table.bmp");
After I took the picture and saved it, I moved it from the bin folder in the project directly to the resource folder and ran the program again. Despite all of this, the result is still ciPixelMismatch. I believe the problem lies within the format that the pictures are being saved as. I believe that despite them being the same image, they are being analyzed in different formats, maybe one of the pictures contains a bit more information than the other which is causing the mismatch. Can somebody please help me solve this problem? I am just beginning with my c# programming, I am 5 days into the learning process, and I am really at a loss for this.
Yours sincerely,
Samuel