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Tables: Angled Headers: fixed support for multi-line labels. various padding/layout fixes. (#6917)

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ocornut
2024-02-19 20:24:07 +01:00
parent 6655ab2e43
commit 405e54ebd5
3 changed files with 43 additions and 25 deletions
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59
imgui_tables.cpp
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@@ -2962,7 +2962,7 @@ float ImGui::TableGetHeaderAngledMaxLabelWidth()
if (IM_BITARRAY_TESTBIT(table->EnabledMaskByIndex, column_n))
if (table->Columns[column_n].Flags & ImGuiTableColumnFlags_AngledHeader)
width = ImMax(width, CalcTextSize(TableGetColumnName(table, column_n), NULL, true).x);
return width + g.Style.CellPadding.x * 2.0f;
return width + g.Style.CellPadding.y * 2.0f; // Swap padding
}
// [Public] This is a helper to output TableHeader() calls based on the column names declared in TableSetupColumn().
@@ -3215,6 +3215,7 @@ void ImGui::TableAngledHeadersRowEx(float angle, float max_label_width)
// Draw background and labels in first pass, then all borders.
float max_x = 0.0f;
ImVec2 padding = g.Style.CellPadding; // We will always use swapped component
for (int pass = 0; pass < 2; pass++)
for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
{
@@ -3236,33 +3237,43 @@ void ImGui::TableAngledHeadersRowEx(float angle, float max_label_width)
draw_list->AddQuadFilled(bg_shape[0], bg_shape[1], bg_shape[2], bg_shape[3], GetColorU32(ImGuiCol_TableHeaderBg));
if (column_n == highlight_column_n)
draw_list->AddQuadFilled(bg_shape[0], bg_shape[1], bg_shape[2], bg_shape[3], GetColorU32(ImGuiCol_Header)); // Highlight on hover
//draw_list->AddQuad(bg_shape[0], bg_shape[1], bg_shape[2], bg_shape[3], GetColorU32(ImGuiCol_TableBorderLight), 1.0f);
max_x = ImMax(max_x, bg_shape[3].x);
// Draw label (first draw at an offset where RenderTextXXX() function won't meddle with applying current ClipRect, then transform to final offset)
// FIXME: May be worth tidying up all those operations to make them easier to understand.
// Draw label
// - First draw at an offset where RenderTextXXX() function won't meddle with applying current ClipRect, then transform to final offset.
// - Handle multiple lines manually, as we want each lines to follow on the horizontal border, rather than see a whole block rotated.
const char* label_name = TableGetColumnName(table, column_n);
const float clip_width = max_label_width - (sin_a * table->RowCellPaddingY);
ImRect label_r(window->ClipRect.Min, window->ClipRect.Min + ImVec2(clip_width + (flip_label ? 0.0f : table->CellPaddingX), header_height + table->RowCellPaddingY));
ImVec2 label_size = CalcTextSize(label_name, NULL, true);
ImVec2 label_off = ImVec2(flip_label ? ImMax(0.0f, max_label_width - label_size.x - table->CellPaddingX) : table->CellPaddingX, table->RowCellPaddingY);
int vtx_idx_begin = draw_list->_VtxCurrentIdx;
RenderTextEllipsis(draw_list, label_r.Min + label_off, label_r.Max, label_r.Max.x, label_r.Max.x, label_name, NULL, &label_size);
int vtx_idx_end = draw_list->_VtxCurrentIdx;
// Rotate and offset label
ImVec2 pivot_in = label_r.GetBL();
ImVec2 pivot_out = ImVec2(column->WorkMinX, row_r.Max.y) + (flip_label ? (unit_right * clip_width) : ImVec2(header_height, 0.0f));
ShadeVertsTransformPos(draw_list, vtx_idx_begin, vtx_idx_end, pivot_in, label_cos_a, label_sin_a, pivot_out); // Rotate and offset
// Debug draw
/*if (g.IO.KeyShift)
const char* label_name_end = FindRenderedTextEnd(label_name);
const float line_off_step_x = g.FontSize / -sin_a;
float line_off_curr_x = 0.0f;
while (label_name < label_name_end)
{
vtx_idx_begin = GetForegroundDrawList()->_VtxCurrentIdx;
GetForegroundDrawList()->AddRect(label_r.Min, label_r.Max, IM_COL32(0, 255, 0, 255), 0.0f, 0, 2.0f);
vtx_idx_end = GetForegroundDrawList()->_VtxCurrentIdx;
ShadeVertsTransformPos(GetForegroundDrawList(), vtx_idx_begin, vtx_idx_end, pivot_in, label_cos_a, label_sin_a, pivot_out); // Rotate and offset
}*/
const char* label_name_eol = strchr(label_name, '\n');
if (label_name_eol == NULL)
label_name_eol = label_name_end;
ImVec2 label_size = CalcTextSize(label_name, label_name_eol);
float clip_width = max_label_width - padding.y; // Using padding.y*2.0f would be symetrical but hide more text.
ImRect clip_r(window->ClipRect.Min, window->ClipRect.Min + ImVec2(clip_width, label_size.y));
int vtx_idx_begin = draw_list->_VtxCurrentIdx;
RenderTextEllipsis(draw_list, clip_r.Min, clip_r.Max, clip_r.Max.x, clip_r.Max.x, label_name, label_name_eol, &label_size);
int vtx_idx_end = draw_list->_VtxCurrentIdx;
// Rotate and offset label
ImVec2 pivot_in = ImVec2(window->ClipRect.Min.x, window->ClipRect.Min.y + label_size.y);
ImVec2 pivot_out = ImVec2(column->WorkMinX, row_r.Max.y);
line_off_curr_x += line_off_step_x;
pivot_out += unit_right * padding.y;
if (flip_label)
pivot_out += unit_right * (clip_width - ImMax(0.0f, clip_width - label_size.x));
pivot_out.x += flip_label ? line_off_curr_x - line_off_step_x : line_off_curr_x;
ShadeVertsTransformPos(draw_list, vtx_idx_begin, vtx_idx_end, pivot_in, label_cos_a, label_sin_a, pivot_out); // Rotate and offset
//if (g.IO.KeyShift) { ImDrawList* fg_dl = GetForegroundDrawList(); vtx_idx_begin = fg_dl->_VtxCurrentIdx; fg_dl->AddRect(clip_r.Min, clip_r.Max, IM_COL32(0, 255, 0, 255), 0.0f, 0, 2.0f); ShadeVertsTransformPos(fg_dl, vtx_idx_begin, fg_dl->_VtxCurrentIdx, pivot_in, label_cos_a, label_sin_a, pivot_out); }
// Register header width
column->ContentMaxXHeadersUsed = column->ContentMaxXHeadersIdeal = column->WorkMinX + ImCeil(line_off_curr_x);
label_name = label_name_eol + 1;
}
}
if (pass == 1)
{