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Log/Capture: Fixed BeginTabItem() label not being included in a text log/capture.

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Extracted tab rendering code into a RenderTextEllipsis() function.
This commit is contained in:
omar
2019-06-11 14:02:46 +02:00
parent a9b5c834b6
commit a8eb64fc54
4 changed files with 49 additions and 29 deletions
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1
docs/CHANGELOG.txt
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@@ -83,6 +83,7 @@ Other Changes:
- Style: Added style.WindowMenuButtonPosition (left/right, defaults to ImGuiDir_Left) to move the
collapsing/docking button to the other side of the title bar.
- Style: Made window close button cross slightly smaller.
- Log/Capture: Fixed BeginTabItem() label not being included in a text log/capture.
- ImDrawList: Added ImDrawCmd::VtxOffset value to support large meshes (64k+ vertices) using 16-bits indices.
The renderer back-end needs to set 'io.BackendFlags |= ImGuiBackendFlags_RendererHasVtxOffset' to enable
this, and honor the ImDrawCmd::VtxOffset field. Otherwise the value will always be zero.

45
imgui.cpp
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@@ -2422,6 +2422,51 @@ void ImGui::RenderTextClipped(const ImVec2& pos_min, const ImVec2& pos_max, cons
LogRenderedText(&pos_min, text, text_display_end);
}
// Another overly complex function until we reorganize everything into a nice all-in-one helper.
// This is made more complex because we have dissociated the layout rectangle (pos_min..pos_max) which define where the ellipsis is, from actual clipping and limit of the ellipsis display.
// This is because in the context of tabs we selectively hide part of the text when the Close Button appears, but we don't want the ellipsis to move.
void ImGui::RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, float clip_max_x, float ellipsis_max_x, const char* text, const char* text_end_full, const ImVec2* text_size_if_known)
{
ImGuiContext& g = *GImGui;
if (text_end_full == NULL)
text_end_full = FindRenderedTextEnd(text);
const ImVec2 text_size = text_size_if_known ? *text_size_if_known : CalcTextSize(text, text_end_full, false, 0.0f);
if (text_size.x > pos_max.x - pos_min.x)
{
const ImFont* font = draw_list->_Data->Font;
const float font_size = draw_list->_Data->FontSize;
const int ellipsis_dot_count = 3;
const float ellipsis_width = (1.0f + 1.0f) * ellipsis_dot_count - 1.0f;
const char* text_end_ellipsis = NULL;
float text_size_clipped_x = font->CalcTextSizeA(font_size, (pos_max.x - pos_min.x) - ellipsis_width + 1.0f, 0.0f, text, text_end_full, &text_end_ellipsis).x;
if (text == text_end_ellipsis && text_end_ellipsis < text_end_full) // Always display at least 1 character if there's no room for character + ellipsis
{
text_end_ellipsis = text + ImTextCountUtf8BytesFromChar(text, text_end_full);
text_size_clipped_x = font->CalcTextSizeA(font_size, FLT_MAX, 0.0f, text, text_end_ellipsis).x;
}
while (text_end_ellipsis > text && ImCharIsBlankA(text_end_ellipsis[-1])) // Trim trailing space
{
text_end_ellipsis--;
text_size_clipped_x -= font->CalcTextSizeA(font_size, FLT_MAX, 0.0f, text_end_ellipsis, text_end_ellipsis + 1).x; // Ascii blanks are always 1 byte
}
RenderTextClippedEx(draw_list, pos_min, ImVec2(clip_max_x, pos_max.y), text, text_end_ellipsis, &text_size, ImVec2(0.0f, 0.0f));
const float ellipsis_x = pos_min.x + text_size_clipped_x + 1.0f;
if (ellipsis_x + ellipsis_width <= ellipsis_max_x)
RenderPixelEllipsis(draw_list, ImVec2(ellipsis_x, pos_min.y), GetColorU32(ImGuiCol_Text), ellipsis_dot_count);
}
else
{
RenderTextClippedEx(draw_list, pos_min, ImVec2(clip_max_x, pos_max.y), text, text_end_full, &text_size, ImVec2(0.0f, 0.0f));
}
if (g.LogEnabled)
LogRenderedText(&pos_min, text, text_end_full);
}
// Render a rectangle shaped with optional rounding and borders
void ImGui::RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border, float rounding)
{

1
imgui_internal.h
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@@ -1575,6 +1575,7 @@ namespace ImGui
IMGUI_API void RenderTextWrapped(ImVec2 pos, const char* text, const char* text_end, float wrap_width);
IMGUI_API void RenderTextClipped(const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align = ImVec2(0,0), const ImRect* clip_rect = NULL);
IMGUI_API void RenderTextClippedEx(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, const char* text, const char* text_end, const ImVec2* text_size_if_known, const ImVec2& align = ImVec2(0, 0), const ImRect* clip_rect = NULL);
IMGUI_API void RenderTextEllipsis(ImDrawList* draw_list, const ImVec2& pos_min, const ImVec2& pos_max, float clip_max_x, float ellipsis_max_x, const char* text, const char* text_end, const ImVec2* text_size_if_known);
IMGUI_API void RenderFrame(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, bool border = true, float rounding = 0.0f);
IMGUI_API void RenderFrameBorder(ImVec2 p_min, ImVec2 p_max, float rounding = 0.0f);
IMGUI_API void RenderColorRectWithAlphaCheckerboard(ImVec2 p_min, ImVec2 p_max, ImU32 fill_col, float grid_step, ImVec2 grid_off, float rounding = 0.0f, int rounding_corners_flags = ~0);

31
imgui_widgets.cpp
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@@ -7077,35 +7077,8 @@ bool ImGui::TabItemLabelAndCloseButton(ImDrawList* draw_list, const ImRect& bb,
text_pixel_clip_bb.Max.x -= close_button_sz;
}
// Label with ellipsis
// FIXME: This should be extracted into a helper but the use of text_pixel_clip_bb and !close_button_visible makes it tricky to abstract at the moment
const char* label_display_end = FindRenderedTextEnd(label);
if (label_size.x > text_ellipsis_clip_bb.GetWidth())
{
const int ellipsis_dot_count = 3;
const float ellipsis_width = (1.0f + 1.0f) * ellipsis_dot_count - 1.0f;
const char* label_end = NULL;
float label_size_clipped_x = g.Font->CalcTextSizeA(g.FontSize, text_ellipsis_clip_bb.GetWidth() - ellipsis_width + 1.0f, 0.0f, label, label_display_end, &label_end).x;
if (label_end == label && label_end < label_display_end) // Always display at least 1 character if there's no room for character + ellipsis
{
label_end = label + ImTextCountUtf8BytesFromChar(label, label_display_end);
label_size_clipped_x = g.Font->CalcTextSizeA(g.FontSize, FLT_MAX, 0.0f, label, label_end).x;
}
while (label_end > label && ImCharIsBlankA(label_end[-1])) // Trim trailing space
{
label_end--;
label_size_clipped_x -= g.Font->CalcTextSizeA(g.FontSize, FLT_MAX, 0.0f, label_end, label_end + 1).x; // Ascii blanks are always 1 byte
}
RenderTextClippedEx(draw_list, text_pixel_clip_bb.Min, text_pixel_clip_bb.Max, label, label_end, &label_size, ImVec2(0.0f, 0.0f));
const float ellipsis_x = text_pixel_clip_bb.Min.x + label_size_clipped_x + 1.0f;
if (!close_button_visible && ellipsis_x + ellipsis_width <= bb.Max.x)
RenderPixelEllipsis(draw_list, ImVec2(ellipsis_x, text_pixel_clip_bb.Min.y), GetColorU32(ImGuiCol_Text), ellipsis_dot_count);
}
else
{
RenderTextClippedEx(draw_list, text_pixel_clip_bb.Min, text_pixel_clip_bb.Max, label, label_display_end, &label_size, ImVec2(0.0f, 0.0f));
}
float ellipsis_max_x = close_button_visible ? -FLT_MAX : bb.Max.x;
RenderTextEllipsis(draw_list, text_ellipsis_clip_bb.Min, text_ellipsis_clip_bb.Max, text_pixel_clip_bb.Max.x, ellipsis_max_x, label, NULL, &label_size);
return close_button_pressed;
}