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| 156 | |
156 | |
| 157 | This one first takes a snapshot of the screen background image, and then |
157 | This one first takes a snapshot of the screen background image, and then |
| 158 | moves it to the upper left corner of the screen (as opposed to the upper |
158 | moves it to the upper left corner of the screen (as opposed to the upper |
| 159 | left corner of the terminal window)- the result is pseudo-transparency: |
159 | left corner of the terminal window)- the result is pseudo-transparency: |
| 160 | the image seems to be static while the window is moved around. |
160 | the image seems to be static while the window is moved around. |
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161 | |
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162 | =head2 COLOUR SPECIFICATIONS |
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163 | |
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164 | Whenever an oprator expects a "colour", then this can be specified in one |
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165 | of two ways: Either as string with an X11 colour specification, such as: |
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166 | |
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167 | "red" # named colour |
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168 | "#f00" # simple rgb |
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169 | "[50]red" # red with 50% alpha |
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170 | "TekHVC:300/50/50" # anything goes |
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171 | |
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172 | OR as an array reference with one, three or four components: |
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173 | |
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174 | [0.5] # 50% gray, 100% alpha |
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175 | [0.5, 0, 0] # dark red, no green or blur, 100% alpha |
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176 | [0.5, 0, 0, 0.7] # same with explicit 70% alpha |
| 161 | |
177 | |
| 162 | =head2 CACHING AND SENSITIVITY |
178 | =head2 CACHING AND SENSITIVITY |
| 163 | |
179 | |
| 164 | Since some operations (such as C<load> and C<blur>) can take a long time, |
180 | Since some operations (such as C<load> and C<blur>) can take a long time, |
| 165 | caching results can be very important for a smooth operation. Caching can |
181 | caching results can be very important for a smooth operation. Caching can |
