limepotato/jexer
1
0
Fork 0
mirror of https://gitlab.com/AutumnMeowMeow/jexer synced 2024-09-19 11:50:19 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

#96 Cell.imageId

Browse source
This commit is contained in:
Autumn Lamonte 2022-01-24 14:34:55 -06:00
parent 38cbde41ce
commit 9356f19fa0
1 changed files with 52 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

52
src/jexer/bits/Cell.java
View file

@ -113,6 +113,15 @@ public class Cell extends CellAttributes {
*/
private int hasTransparentPixels = -1;
/**
* The image ID, a positive integer. This is NOT like a the hashcode.
* Instead is an ID assigned by the logical layer that created the image,
* so that as this image cell is passed down to the user-facing screen it
* can be quickly be determined if it is different from another image
* cell.
*/
private int imageId = 0;
// ------------------------------------------------------------------------
// Constructors -----------------------------------------------------------
// ------------------------------------------------------------------------
@ -181,6 +190,19 @@ public class Cell extends CellAttributes {
imageHashCode = 0;
hasTransparentPixels = 0;
width = Width.SINGLE;
this.imageId = 0;
}
/**
* Set the image data for this cell.
*
* @param image the image for this cell
* @param imageId the ID for this image
*/
public void setImage(final BufferedImage image, final int imageId) {
setImage(image);
assert (imageId > 0);
this.imageId = imageId;
}
/**
@ -224,6 +246,24 @@ public class Cell extends CellAttributes {
return newImage;
}
/**
* "Mix" the imageId of another Cell into this cell. When two cells both
* have imageId's set, the mixture of them should be a deterministic
* combination such that one can compare a sequence of "mixed" cells and
* know (within a high degree of likelihood) that they produced the same
* final image.
*
* @param other the other cell
*/
public void mixImageId(final Cell other) {
if (other.imageId <= 0) {
this.imageId = 0;
return;
}
assert (other.isImage());
this.imageId = ((this.imageId << 4) ^ other.imageId) & 0x7FFFFFFF;
}
/**
* Flatten the image on this cell by rendering it either onto the
* background color, or generating the glyph and rendering over that.
@ -518,6 +558,7 @@ public class Cell extends CellAttributes {
image = null;
imageHashCode = 0;
invertedImage = null;
imageId = 0;
background = java.awt.Color.BLACK;
hasTransparentPixels = -1;
}
@ -533,6 +574,7 @@ public class Cell extends CellAttributes {
image = null;
imageHashCode = 0;
invertedImage = null;
imageId = 0;
background = java.awt.Color.BLACK;
hasTransparentPixels = -1;
}
@ -637,6 +679,11 @@ public class Cell extends CellAttributes {
) {
return false;
}
if ((imageId != 0) && (that.imageId != 0)
&& (imageId != that.imageId)
) {
return false;
}
if (compareCellImages(this, that) == false) {
return false;
}
@ -746,6 +793,7 @@ public class Cell extends CellAttributes {
imageHashCode = makeImageHashCode();
}
hash = (B * hash) + imageHashCode;
hash = (B * hash) + imageId;
}
if (invertedImage != null) {
hash = (B * hash) + invertedImage.hashCode();
@ -768,10 +816,12 @@ public class Cell extends CellAttributes {
this.invertedImage = that.invertedImage;
this.background = that.background;
this.imageHashCode = that.imageHashCode;
this.imageId = that.imageId;
this.hasTransparentPixels = that.hasTransparentPixels;
} else {
this.image = null;
this.imageHashCode = 0;
this.imageId = 0;
this.hasTransparentPixels = -1;
this.width = Width.SINGLE;
}
@ -788,6 +838,7 @@ public class Cell extends CellAttributes {
public void setAttr(final CellAttributes that) {
image = null;
imageHashCode = 0;
imageId = 0;
hasTransparentPixels = -1;
super.setTo(that);
}
@ -802,6 +853,7 @@ public class Cell extends CellAttributes {
if (!keepImage) {
image = null;
imageHashCode = 0;
imageId = 0;
hasTransparentPixels = -1;
}
super.setTo(that);