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tools: in performance-log-viewer.py, allow inverting selection

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In the perofmance-log viewer, add header-bar buttons to clear and
invert the selection, and allow inverting the selection by ctrl-
right-clicking on the sample-selection area.

Update the docs.

(cherry picked from commit b74c33db5c)
This commit is contained in:
Ell
2019-01-16 03:55:18 -05:00
parent 46c5e8f33f
commit 940cf5f196
2 changed files with 57 additions and 8 deletions
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21
devel-docs/performance-logs/performance-logs.md
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@ -28,7 +28,8 @@ report performance-related issues.
- [4.2.4.1.2. Call-Graph Direction](#42412-call-graph-direction)
- [4.2.4.2. Function Columns](#4242-function-columns)
- [4.2.4.3. Source Columns](#4243-source-columns)
- [4.3. Searching Samples](#43-searching-samples)
- [4.3. Selection Modifiers](#43-selection-modifiers)
- [4.3.1. Searching Samples](#431-searching-samples)
- [4.4. History Navigation](#44-history-navigation)
- [4.5. Environment Variables](#45-environment-variables)
- [5. Performance-Log Parameters](#5-performance-log-parameters)
@ -212,11 +213,13 @@ add-to, subtract-from, and intersect-with the current selection, respectively.
Samples can also be selected using the keyboard, with the arrow, *Home*/*End*,
and *Shift* keys, while any of the graphs has focus.
Right clicking on any of the graphs, or pressing *Escape* while they have
Right-clicking on any of the graphs, or pressing *Escape* while they have
focus, clears the selection.
The behavior when the selection is empty is equivalent to selecting all
samples.
*Ctrl*-right-clicking on any of the graphs inverts the selection.
### 4.2. Information Area
The lower part of the viewer window is the *information area*.
@ -497,10 +500,18 @@ the selected line, if possible (see
[section *4.5*](#45-environment-variables)).
The button's tooltip shows the full path to the file.
### 4.3. Searching Samples
### 4.3. Selection Modifiers
The *Find Samples* button on the right side of the window's titlebar allows
searching for samples matching a user-defined condition.
The buttons on the right side of the window's titlebar allow modifying the
selection in various ways:
The *Clear Selection* and *Invert Selection* buttons clear and invert the
selection, respectively.
The *Find Samples* button allows searching for samples, as explained below.
#### 4.3.1. Searching Samples
The *Find Samples* button opens a popover allowing searching for all samples
matching a user-defined condition.
The condition should be a Python expression, evaluating to a boolean value.
The selected samples are those for which the expression evaluates to `True`.