Changes between Version 11 and Version 12 of IconTutorial

Timestamp:

Dec 29, 2007, 1:15:31 PM (18 years ago)

Author:

cinc

Comment:

Command explanantion

IconTutorial

@@ -199 +199 @@
 
 As expected clicking the '''Repaint''' button will not show a new image because the necessary paint commands referencing the new image are missing.
+
+The necessary commands are shown below. 
+
+
+{{{
+   Key name:             CairoCommands
+   Data:                 <ctxt>save</><transl>0 0.2</><scale>0.01 0.01</><imgkey>OverlayImage # 1</><ctxt>restore</>
+                         <ctxt>save</><transl>0.4 0.3</><scale>0.01 0.01</><imgkey>OverlayImage2 # 1</><ctxt>restore</>
+}}}
+
+
+[[Image(source:/icon_tutorial/multimedia_folder.png, nolink)]] [[Image(source:/icon_tutorial/multimedia_folder_small.png, nolink)]]
+
+==== Additional commands in detail ====
+
+{{{  
+<transl>x y</>:
+
+   Specify the position for the next paint command.
+}}}
+
+''X'' and ''y'' specify the position on the surface where subsequent painting will take place. 0.0 0.0 is the upper left corner. The values may run from 0.0 to 1.0.
+
+----
+
+The resulting icon shows that images are drawn in the order they are described in the painting commands. Thus the speaker image (!OverlayImage2) is painted on the very top.
+
+Each of the image commands is surounded by ''<ctxt>save</>'' and ''<ctxt>restore</>''. This facilitates correct scaling and positioning. An example shows this.
+
+{{{
+   Key name:             CairoCommands
+   Data:                 <ctxt>save</><transl>0 0.2</><scale>0.01 0.01</><imgkey>OverlayImage # 1</>
+                                      <transl>0.4 0.3</><scale>0.01 0.01</><imgkey>OverlayImage2 # 1</><ctxt>restore</>
+}}}
+
+Using only one block of context save commands (which is pointless because no further painting is done) yields the following icon.
+