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Tables: setup and maintain ItemWidth per column.

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This commit is contained in:
ocornut
2020-11-20 16:58:48 +01:00
parent 8f126d5d95
commit 0c9ab0acdd
4 changed files with 80 additions and 29 deletions
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88
imgui_demo.cpp
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@ -4021,47 +4021,87 @@ static void ShowDemoWindowTables()
ImVec2 outer_size(0, TEXT_BASE_HEIGHT * 7);
if (ImGui::BeginTable("##nways", column_count, flags, outer_size))
{
for (int row = 0; row < 10; row++)
for (int cell = 0; cell < 10 * column_count; cell++)
{
ImGui::TableNextRow();
for (int column = 0; column < column_count; column++)
ImGui::TableNextColumn();
int column = ImGui::TableGetColumnIndex();
int row = ImGui::TableGetRowIndex();
ImGui::PushID(cell);
char label[32];
static char text_buf[32] = "";
sprintf(label, "Hello %d,%d", column, row);
switch (contents_type)
{
ImGui::TableSetColumnIndex(column);
char label[32];
static char text_buf[32] = "";
sprintf(label, "Hello %d,%d", column, row);
switch (contents_type)
{
case CT_ShortText: ImGui::TextUnformatted(label); break;
case CT_LongText: ImGui::Text("Some longer text %d,%d\nOver two lines..", column, row); break;
case CT_Button: ImGui::Button(label); break;
case CT_FillButton: ImGui::Button(label, ImVec2(-FLT_MIN, 0.0f)); break;
case CT_InputText: ImGui::SetNextItemWidth(-FLT_MIN); ImGui::InputText("##", text_buf, IM_ARRAYSIZE(text_buf)); break;
}
case CT_ShortText: ImGui::TextUnformatted(label); break;
case CT_LongText: ImGui::Text("Some longer text %d,%d\nOver two lines..", column, row); break;
case CT_Button: ImGui::Button(label); break;
case CT_FillButton: ImGui::Button(label, ImVec2(-FLT_MIN, 0.0f)); break;
case CT_InputText: ImGui::SetNextItemWidth(-FLT_MIN); ImGui::InputText("##", text_buf, IM_ARRAYSIZE(text_buf)); break;
}
ImGui::PopID();
}
ImGui::EndTable();
}
ImGui::TextUnformatted("Item Widths");
ImGui::SameLine();
HelpMarker("Showcase using PushItemWidth() and how it is preserved on a per-column basis");
if (ImGui::BeginTable("##table2", 3, ImGuiTableFlags_Borders))
{
ImGui::TableSetupColumn("small");
ImGui::TableSetupColumn("half");
ImGui::TableSetupColumn("right-align");
ImGui::TableHeadersRow();
for (int row = 0; row < 3; row++)
{
ImGui::TableNextRow();
if (row == 0)
{
// Setup ItemWidth once (instead of setting up every time, which is also possible but less efficient)
ImGui::TableSetColumnIndex(0);
ImGui::PushItemWidth(TEXT_BASE_WIDTH * 3.0f); // Small
ImGui::TableSetColumnIndex(1);
ImGui::PushItemWidth(-ImGui::GetContentRegionAvail().x * 0.5f);
ImGui::TableSetColumnIndex(2);
ImGui::PushItemWidth(-FLT_MIN); // Right-aligned
}
// Draw our contents
static float dummy_f = 0.0f;
ImGui::PushID(row);
ImGui::TableSetColumnIndex(0);
ImGui::SliderFloat("float0", &dummy_f, 0.0f, 1.0f);
ImGui::TableSetColumnIndex(1);
ImGui::SliderFloat("float1", &dummy_f, 0.0f, 1.0f);
ImGui::TableSetColumnIndex(2);
ImGui::SliderFloat("float2", &dummy_f, 0.0f, 1.0f);
ImGui::PopID();
}
ImGui::EndTable();
}
ImGui::TextUnformatted("Stretch + ScrollX");
ImGui::SameLine();
HelpMarker(
"Showcase using Stretch columns + ScrollX together: "
"this is rather unusual and only makes sense when specifying an 'inner_width' for the table!\n"
"Without an explicit value, inner_width is == outer_size.x and therefore using Stretch columns + ScrollX together doesn't make sense.");
static ImGuiTableFlags flags2 = ImGuiTableFlags_ColumnsWidthStretch | ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_RowBg;
static ImGuiTableFlags flags3 = ImGuiTableFlags_ColumnsWidthStretch | ImGuiTableFlags_ScrollX | ImGuiTableFlags_ScrollY | ImGuiTableFlags_BordersOuter | ImGuiTableFlags_RowBg;
static float inner_width = 1000.0f;
PushStyleCompact();
ImGui::PushID("flags2");
ImGui::CheckboxFlags("ImGuiTableFlags_ScrollX", &flags2, ImGuiTableFlags_ScrollX);
if (ImGui::CheckboxFlags("ImGuiTableFlags_ColumnsWidthStretch", &flags2, ImGuiTableFlags_ColumnsWidthStretch))
flags2 &= ~ImGuiTableFlags_ColumnsWidthFixed; // Can't specify both sizing polices so we clear the other
if (ImGui::CheckboxFlags("ImGuiTableFlags_ColumnsWidthFixed", &flags2, ImGuiTableFlags_ColumnsWidthFixed))
flags2 &= ~ImGuiTableFlags_ColumnsWidthStretch; // Can't specify both sizing polices so we clear the other
ImGui::PushID("flags3");
ImGui::CheckboxFlags("ImGuiTableFlags_ScrollX", &flags3, ImGuiTableFlags_ScrollX);
if (ImGui::CheckboxFlags("ImGuiTableFlags_ColumnsWidthStretch", &flags3, ImGuiTableFlags_ColumnsWidthStretch))
flags3 &= ~ImGuiTableFlags_ColumnsWidthFixed; // Can't specify both sizing polices so we clear the other
if (ImGui::CheckboxFlags("ImGuiTableFlags_ColumnsWidthFixed", &flags3, ImGuiTableFlags_ColumnsWidthFixed))
flags3 &= ~ImGuiTableFlags_ColumnsWidthStretch; // Can't specify both sizing polices so we clear the other
ImGui::SetNextItemWidth(TEXT_BASE_WIDTH * 10.0f);
ImGui::DragFloat("inner_width", &inner_width, 1.0f, 0.0f, FLT_MAX, "%.1f");
ImGui::PopID();
PopStyleCompact();
if (ImGui::BeginTable("##table2", 7, flags2 | ImGuiTableFlags_ColumnsWidthStretch | ImGuiTableFlags_ContextMenuInBody, outer_size, inner_width))
if (ImGui::BeginTable("##table3", 7, flags3 | ImGuiTableFlags_ColumnsWidthStretch | ImGuiTableFlags_ContextMenuInBody, outer_size, inner_width))
{
for (int cell = 0; cell < 20 * 7; cell++)
{