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Add demo code to test text alignment support

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Webster Sheets 2021-06-21 02:47:02 -04:00 committed by Drezil
parent 8bcb0cda73
commit 2d3aa2e52c
1 changed files with 54 additions and 4 deletions
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58
imgui_demo.cpp
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@ -1026,13 +1026,35 @@ static void ShowDemoWindowWidgets()
if (ImGui::TreeNode("Word Wrapping")) if (ImGui::TreeNode("Word Wrapping"))
{ {
// Using shortcut. You can use PushTextWrapPos()/PopTextWrapPos() for more flexibility. // Using shortcut. You can use PushTextWrapPos()/PopTextWrapPos() for more flexibility.
ImGui::TextUnformatted("[Left Align]");
ImGui::TextWrapped( ImGui::TextWrapped(
"This text should automatically wrap on the edge of the window. The current implementation " "This text should automatically wrap on the edge of the window. The current implementation "
"for text wrapping follows simple rules suitable for English and possibly other languages."); "for text wrapping follows simple rules suitable for English and possibly other languages.");
ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255, 255, 0, 255));
ImGui::Spacing();
ImGui::PushTextAlignment(0.5f);
ImGui::TextUnformatted("[Center Align]");
ImGui::TextWrapped(
"This text should automatically wrap on the edge of the window. The current implementation "
"for text wrapping follows simple rules suitable for English and possibly other languages.");
ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255, 255, 0, 255));
ImGui::PopTextAlignment();
ImGui::Spacing();
ImGui::PushTextAlignment(1.0f);
ImGui::TextUnformatted("[Right Align]");
ImGui::TextWrapped(
"This text should automatically wrap on the edge of the window. The current implementation "
"for text wrapping follows simple rules suitable for English and possibly other languages.");
ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255, 255, 0, 255));
ImGui::PopTextAlignment();
ImGui::Spacing(); ImGui::Spacing();
static float wrap_width = 200.0f; static float wrap_width = 200.0f;
ImGui::SliderFloat("Wrap width", &wrap_width, -20, 600, "%.0f"); ImGui::SliderFloat("Wrap width", &wrap_width, -20, 600, "%.0f");
static float text_align = 0.0f;
ImGui::SliderFloat("Text alignment", &text_align, 0.0f, 1.0f, "%.2f");
ImDrawList* draw_list = ImGui::GetWindowDrawList(); ImDrawList* draw_list = ImGui::GetWindowDrawList();
for (int n = 0; n < 2; n++) for (int n = 0; n < 2; n++)
@ -1042,16 +1064,44 @@ static void ShowDemoWindowWidgets()
ImVec2 marker_min = ImVec2(pos.x + wrap_width, pos.y); ImVec2 marker_min = ImVec2(pos.x + wrap_width, pos.y);
ImVec2 marker_max = ImVec2(pos.x + wrap_width + 10, pos.y + ImGui::GetTextLineHeight()); ImVec2 marker_max = ImVec2(pos.x + wrap_width + 10, pos.y + ImGui::GetTextLineHeight());
ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width); ImGui::PushTextWrapPos(ImGui::GetCursorPos().x + wrap_width);
ImGui::PushTextAlignment(text_align);
if (n == 0) if (n == 0)
ImGui::Text("The lazy dog is a good dog. This paragraph should fit within %.0f pixels. Testing a 1 character word. The quick brown fox jumps over the lazy dog.", wrap_width); ImGui::Text(
else "The lazy dog is a good dog. This paragraph should fit within %.0f pixels. "
ImGui::Text("aaaaaaaa bbbbbbbb, c cccccccc,dddddddd. d eeeeeeee ffffffff. gggggggg!hhhhhhhh"); "Testing a 1 character word. The quick brown fox jumps over the lazy dog.", wrap_width);
else {
ImGui::TextWrapped("aaaaaaaa bbbbbbbb, c\n\ttest\r\n cccccccc,dddddddd. d eeeeeeee ffffffff. gggggggg!hhhhhhhh");
}
ImGui::PopTextAlignment();
// Draw actual text bounding box, following by marker of our expected limit (should not overlap!) // Draw actual text bounding box, following by marker of our expected limit (should not overlap!)
draw_list->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255, 255, 0, 255)); draw_list->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255, 255, 0, 255));
draw_list->AddRectFilled(marker_min, marker_max, IM_COL32(255, 0, 255, 255)); draw_list->AddRectFilled(marker_min, marker_max, IM_COL32(255, 0, 255, 255));
ImGui::PopTextWrapPos(); ImGui::PopTextWrapPos();
} }
ImGui::Spacing();
ImGui::TextUnformatted("[Typesetting Example]");
ImGui::SameLine(); HelpMarker("Use SetCursorPos and TextWrapPos to horizontally align text blocks.");
ImGui::PushTextAlignment(text_align);
float max_wrap_width = ImGui::GetContentRegionAvailWidth();
if (wrap_width < max_wrap_width) {
ImGui::SetCursorPos(ImVec2(ImGui::GetCursorPosX() + fabs(max_wrap_width - wrap_width) * text_align, ImGui::GetCursorPosY()));
}
ImGui::PushTextWrapPos(ImGui::GetCursorPosX() + wrap_width);
ImGui::Text(
"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt "
"ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation "
"ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in "
"reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur "
"sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id "
"est laborum.");
ImGui::GetWindowDrawList()->AddRect(ImGui::GetItemRectMin(), ImGui::GetItemRectMax(), IM_COL32(255, 255, 0, 255));
ImGui::PopTextWrapPos();
ImGui::PopTextAlignment();
ImGui::TreePop(); ImGui::TreePop();
} }
@ -3417,7 +3467,7 @@ static void ShowDemoWindowLayout()
case 2: case 2:
ImVec4 clip_rect(p0.x, p0.y, p1.x, p1.y); // AddText() takes a ImVec4* here so let's convert. ImVec4 clip_rect(p0.x, p0.y, p1.x, p1.y); // AddText() takes a ImVec4* here so let's convert.
draw_list->AddRectFilled(p0, p1, IM_COL32(90, 90, 120, 255)); draw_list->AddRectFilled(p0, p1, IM_COL32(90, 90, 120, 255));
draw_list->AddText(ImGui::GetFont(), ImGui::GetFontSize(), text_pos, IM_COL32_WHITE, text_str, NULL, 0.0f, &clip_rect); draw_list->AddText(ImGui::GetFont(), ImGui::GetFontSize(), text_pos, IM_COL32_WHITE, text_str, NULL, 0.0f, 0.0f, &clip_rect);
break; break;
} }
} }