On 06-Apr-20 12:26 PM, Sergey Bylokhov wrote:
On 4/5/20 11:08 pm, Prasanta Sadhukhan wrote:
On 05-Apr-20 10:29 AM, Sergey Bylokhov wrote:
On 4/2/20 8:59 pm, Prasanta Sadhukhan wrote:
If we GC is correct in reset/pack step, but the View calculate
wrong size(and update it only after "graphicsConfiguration"
property change) means that we calculate the size of the View
using wrong GC, why?
It's not the size of View, it's the preferredSize that is wrong.
This is because tip's GC is null before the tip is shown, so View's
span is calculated accordingly. Only when View isupdated when
"graphicsConfiguration" is fired, then Tooltip GC is updated and
preferredSpan is calculated correctly.
It's to be remembered that the issue happens only when html text is
shown in ToolTip. If normal text is shown , there is no issue. I
guess if it's a question of wrong GC during popup reset/pack, then
it will cause problem during normal text rendering also, no?
If GC of the tip is null before showing then can we use default
screen GC by default? Same as in the java.awt.Window.initGC().
I tried but SwingUtilities.windowForComponent(tip) returns null so
there is no "Window" parent associated with tooltip so initGC()
cannot be called on tip, as I see.
Also, tip GC is null for normal text too, where it works. Only
difference between normal and html text is in calculation of
getPreferredSize/MaximumSize/MinimumSize where the size is updated
based on updated span calculation, so I have used updated
preferredSize in my fix.
The normal text may work because the text and font metrics produce the
"correct" size which is not changed on the scaled screen, while the
HTML produce different size depending on the font metrics. Note that
you should not call Window.initGC() but use the similar logic
somewhere in the code which initialize/show tip.
I tried similar logic in ToolTipManager when the tip is created but to
no effect. Even though BasicHTML.updateRenderer() is called but
preferredSize is not updated, since JTooltip width/height was coming as
0x0 in BasicToolTipUI#propertyChange()
tip = insideComponent.createToolTip();
tip.setTipText(toolTipText);
+
+ System.out.println("default gc " + gc.getDefaultTransform());
+ System.out.println("insideComponent GC " +
insideComponent.getGraphicsConfiguration().getDefaultTransform());
+ GraphicsConfiguration oldConfig =
tip.getGraphicsConfiguration();
+ System.out.println("tip oldgc " +
tip.getGraphicsConfiguration());
+ GraphicsConfiguration newConfig =
tip.getGraphicsConfiguration();
+ if (newConfig == null) {
+ newConfig =
GraphicsEnvironment.getLocalGraphicsEnvironment().
+ getDefaultScreenDevice().getDefaultConfiguration();
+ }
+ System.out.println("newgc " + newConfig);
+ if (newConfig != null) System.out.println(" transform " +
newConfig.getDefaultTransform());
+ tip.firePropertyChange("graphicsConfiguration", oldConfig,
newConfig);
+
+
size = tip.getPreferredSize();
+ System.out.println("tip preferredsize " + size);
if(preferredLocation != null) {
location = toFind;
