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Merge pull request #1127 from zulkarnine/patch-1

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Fix background color in ColoredPrintf
This commit is contained in:
Gennadiy Civil 2017-08-10 20:43:26 -04:00 committed by GitHub
commit 1579064390
1 changed files with 31 additions and 3 deletions
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34
googletest/src/gtest.cc
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@ -2895,6 +2895,33 @@ WORD GetColorAttribute(GTestColor color) {
}
}
int GetBitOffset(WORD color_mask) {
if (color_mask == 0) return 0;
int bitOffset = 0;
while((color_mask & 1) == 0) {
color_mask >>= 1;
++bitOffset;
}
return bitOffset;
}
WORD GetNewColor(GTestColor color, WORD old_color_attrs) {
// Let's reuse the BG
static const WORD background_mask = BACKGROUND_BLUE | BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_INTENSITY;
static const WORD foreground_mask = FOREGROUND_BLUE | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_INTENSITY;
const WORD existing_bg = old_color_attrs & background_mask;
WORD new_color = GetColorAttribute(color) | existing_bg | FOREGROUND_INTENSITY;
static const int bg_bitOffset = GetBitOffset(background_mask);
static const int fg_bitOffset = GetBitOffset(foreground_mask);
if (((new_color & background_mask) >> bg_bitOffset) == ((new_color & foreground_mask) >> fg_bitOffset)) {
new_color ^= FOREGROUND_INTENSITY; //invert intensity
}
return new_color;
}
#else
// Returns the ANSI color code for the given color. COLOR_DEFAULT is
@ -2980,13 +3007,14 @@ void ColoredPrintf(GTestColor color, const char* fmt, ...) {
CONSOLE_SCREEN_BUFFER_INFO buffer_info;
GetConsoleScreenBufferInfo(stdout_handle, &buffer_info);
const WORD old_color_attrs = buffer_info.wAttributes;
const WORD new_color = GetNewColor(color, old_color_attrs);
// We need to flush the stream buffers into the console before each
// SetConsoleTextAttribute call lest it affect the text that is already
// printed but has not yet reached the console.
fflush(stdout);
SetConsoleTextAttribute(stdout_handle,
GetColorAttribute(color) | FOREGROUND_INTENSITY);
SetConsoleTextAttribute(stdout_handle, new_color);
vprintf(fmt, args);
fflush(stdout);