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ImDrawList: Fixed clipping of leading lines above the clipping rectangle from counting in the worst case vertices reservation. (fix code added in #200!)

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This commit is contained in:
omar 2018-08-21 22:34:16 +02:00
parent 2dc5ec95d7
commit 975b5a7310
2 changed files with 10 additions and 8 deletions
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1
CHANGELOG.txt
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@ -73,6 +73,7 @@ Other Changes:
- Fixed PushID() from keeping alive the new ID Stack top value (if a previously active widget shared the ID it would be erroneously kept alive).
- Fixed horizontal mouse wheel not forwarding the request to the parent window if ImGuiWindowFlags_NoScrollWithMouse is set. (#1463, #1380, #1502)
- Fixed a include build issue for Cygwin in non-POSIX (Win32) mode. (#1917, #1319, #276)
- ImDrawList: Fixed clipping of leading lines above the clipping rectangle from counting in the worst-case vertices reservation. (fix code added in #200!)
- OS/Windows: Fixed missing ImmReleaseContext() call in the default Win32 IME handler. (#1932) [@vby]
- Metrics: Changed io.MetricsActiveWindows to reflect the number of active windows (!= from visible windows), which is useful
for lazy/idle render mechanisms as new windows are typically not visible for one frame.

17
imgui_draw.cpp
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@ -2632,11 +2632,16 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
const bool word_wrap_enabled = (wrap_width > 0.0f);
const char* word_wrap_eol = NULL;
// Skip non-visible lines
// Fast-forward to first visible line
const char* s = text_begin;
if (!word_wrap_enabled && y + line_height < clip_rect.y)
while (s < text_end && *s != '\n') // Fast-forward to next line
s++;
while (y + line_height < clip_rect.y)
{
while (s < text_end)
if (*s++ == '\n')
break;
y += line_height;
}
// Reserve vertices for remaining worse case (over-reserving is useful and easily amortized)
const int vtx_count_max = (int)(text_end - s) * 4;
@ -2695,12 +2700,8 @@ void ImFont::RenderText(ImDrawList* draw_list, float size, ImVec2 pos, ImU32 col
{
x = pos.x;
y += line_height;
if (y > clip_rect.w)
break;
if (!word_wrap_enabled && y + line_height < clip_rect.y)
while (s < text_end && *s != '\n') // Fast-forward to next line
s++;
break; // break out of main loop
continue;
}
if (c == '\r')