Stack Overflow
Stack Overflow

Questions tagged [pixmap]

123 questions
2
votes
1 answer

Get Pixmap out of Xlib

I've been trying to find a way of grabbing video directly from an X window and got pointed to Xlib and the compositing extension. So far, I've been able to listen to change events and grab a Pixmap with this code: #include #include…
peacememories
  • 123
  • 1
  • 5
1
vote
1 answer

WPF C#: load a pixmap data block into an Image control

I have an image in the form of a byte array of a certain size. It is not important to know where it comes from. It has some further parameters: w,h,dn. I do not use dn (can get it if needed however) but color which was calculated this way if…
P5music
  • 3,197
  • 2
  • 32
  • 81
1
vote
1 answer

How to find the bounding rectangle(s) of a given color, within a pixmap in Libgdx or Java

I've been trying to find the bounding rectangle(s) of a given color, within a pixmap using libgdx. I've found this answer https://stackoverflow.com/a/62911971/14895996 from a thread How to find the bounding rectangle(s) of a given color, withing a…
WASD123
  • 15
  • 1
  • 9
1
vote
1 answer

How to install 'rtiff' package in R 4.0.3 for cell counting script

I'm using a beginner's manual (https://apps.dtic.mil/dtic/tr/fulltext/u2/1079243.pdf) in order to count cells from a microscope image using Rstudio. After installing the BiocManager and EBImage package, the manual…
Jesus ML
  • 11
  • 1
1
vote
2 answers

Qt: Rotating a label with a Pixmap on it

I have a label with a pixmap on it Code looks like this: Label = new QLabel (dialog, Qt::Widget); Label -> setGeometry( xPosition, yPosition, 25, 87 ); QPixmap…
CeeAre
  • 11
  • 2
1
vote
1 answer

Python - PyQT - How to detect mouse events when clicking text/points in a pixmap

Suppose I have drawn simple text (say just the letter 'x') with some font parameters (like size 20 font, etc.) onto an (x,y) location in a QLabel that holds a QPixmap. What are the relevant methods that I will need to override in order to detect a…
ely
  • 74,674
  • 34
  • 147
  • 228
1
vote
1 answer

LibGDX - Sprite / Pixmap / Camera / ViewPort sizes (width/height ) - algorithm of all size transformations from PixMap to (physical device) Screen

What is my complete thinking algorithm to understand all possible width/height transformations on the path PixMap -> (physical) Screen/monitor? Sorry for the stupid question, but how do these sizes corellate / scale / interact? What size do I…
Code Complete
  • 3,146
  • 1
  • 15
  • 38
1
vote
1 answer

How to get int values for each pixel from a pixmap in libgdx

I'm trying to open a PNG file and display the value of each pixel. Pixmap pixmap = new Pixmap(new FileHandle("images/Laby0.png")); int widthPixmap = pixmap.getWidth(); int heightPixmap = pixmap.getHeight(); for(int y=0; y < heightPixmap; y++){ …
Jonath P
  • 519
  • 5
  • 16
1
vote
1 answer

How to copy a GdkPixbuf with a transparent background over another GdkPixbuf

While using GDK in C/C++, I try to copy a GdkPixbuf with a transparent background over another GdkPixbuf, gdk_pixbuf_copy_area() says: (scrol:6227): GdkPixbuf-CRITICAL **: 10:41:37.084: gdk_pixbuf_copy_area: assertion '!(gdk_pixbuf_get_has_alpha…
dave
  • 11
  • 1
1
vote
1 answer

Is there a way for xcb to load a file into a pixmap?

I'm writing an application with rust-xcb. However, when I try to load a file into a pixmap I cannot find any way to do it. I also use image library to load image files (jpg). But I am not familiar with xcb, is there a way for xcb to load pixel…
YangKeao
  • 184
  • 6
1
vote
1 answer

Libgdx painting game logic

i'm learning libgdx in purpose of building a realtime multiplayer painting game. Game will last in 120 second and 4 people with 4 different colors will race to paint more portion of the screen. Now i'm trying to implement circular painting as…
Ferit Özcan
  • 31
  • 1
  • 10
1
vote
1 answer

Gtk-Gdk Pixmap in Pygobject python

I'm porting a code from PyGtk to PyGI(PyGObject). There is my code: import gi gi.require_version('Gtk','2.0') from gi.repository import Gtk, Gdk, GObject w, h = 100,100 # pixmap = gtk.gdk.Pixmap(None, w, h, 1) pixmap = Gdk.Pixmap(None, w, h, 1) # I…
amirmahdi nezhadshamsi
  • 108
  • 8
1
vote
0 answers

legend3d failed in RGL : "Pixmap load: file format unsupported"

I’m using rgl package to draw a 3D scatterplot in R. Everything is working fine, except the legend that does not appear on the 3D plot, and I have this warning: Warning messages: 1: In rgl.material(color = color, back = back, ...) : RGL: Pixmap…
Josephine Tidiane
  • 19
  • 5
1
vote
0 answers

how do i change the size of a picture using the mouse on pyqt4

how do i change the size of a picture using the mouse button like we do in Microsoft Word or Adobe Photoshop ? this is my code class Ui_Form(object): def setupUi(self, Form): Form.setObjectName(_fromUtf8("Form")) Form.resize(923, 655) …
popori popori
  • 11
  • 2
1
vote
2 answers

Native Activity, GLES2.0: Uploading pixel array to screen

I created a pixmap using, for example, this code //... // Native Activity #define HEIGHT 600 #define WIDTH 600 uint32_t texDat[WIDTH*HEIGHT*4]; static double it = 0; uint8_t color = sin(it)*256; for (int i = 0; i < WIDTH; i++) for (int j = 0; j <…
Twaik Yont
  • 102
  • 10
1 2
3
…
8 9