mirror of
https://github.com/SpeedBreakerProject/speedbreaker.git
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e128baca5e
Co-authored-by: Lydacious <81742991+lydacious@users.noreply.github.com> Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
98 lines
3.8 KiB
C++
98 lines
3.8 KiB
C++
// SpeedBreaker runtime. GPL-3.0-or-later (see COPYING). See ui.h.
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//
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// The page shown instead of the game when it can't start: today, when the
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// guest's 4 GB of address space couldn't be reserved (kernel/memory_status.h:
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// on iOS, an app signed without Extended Virtual Addressing). Before the
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// game, like the installer: nothing of the game runs behind it. On iOS it
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// stays up (an app doesn't quit itself; the player swipes it away); elsewhere
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// OK, A, B, Start or Esc closes it, and the window's close button too.
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#include <stdafx.h>
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#include "ui.h"
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#include <imgui.h>
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namespace ui
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{
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namespace
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{
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constexpr bool kCanQuit =
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#if defined(__APPLE__) && TARGET_OS_IOS
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false;
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#else
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true;
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#endif
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struct ErrorPage
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{
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std::string title;
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std::vector<std::string> paragraphs;
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std::string details;
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bool firstFrame = true;
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bool quit = false;
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};
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void Draw(ErrorPage& page)
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{
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float s = Scale();
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ImGuiViewport* viewport = ImGui::GetMainViewport();
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float width = std::min(viewport->WorkSize.x - 2 * kSpaceL * s, 760.0f * s);
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float maxHeight = viewport->WorkSize.y - 2 * kSpaceL * s;
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ImGui::SetNextWindowPos(viewport->GetWorkCenter(), ImGuiCond_Always, ImVec2(0.5f, 0.5f));
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ImGui::SetNextWindowSizeConstraints(ImVec2(width, 0), ImVec2(width, maxHeight));
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constexpr ImGuiWindowFlags flags = ImGuiWindowFlags_NoTitleBar | ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove |
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ImGuiWindowFlags_NoCollapse | ImGuiWindowFlags_NoSavedSettings | ImGuiWindowFlags_AlwaysAutoResize;
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if (page.firstFrame || !ImGui::IsWindowFocused(ImGuiFocusedFlags_AnyWindow))
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ImGui::SetNextWindowFocus();
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if (!ImGui::Begin("Can't start", nullptr, flags))
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{
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ImGui::End();
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return;
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}
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TitleText(page.title.c_str());
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ImGui::Spacing();
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ImGui::PushTextWrapPos(0.0f);
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for (size_t i = 0; i < page.paragraphs.size(); i++)
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{
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if (i > 0)
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ImGui::Dummy(ImVec2(0, kSpaceS * s));
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ImGui::TextWrapped("%s", page.paragraphs[i].c_str());
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}
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if (!page.details.empty())
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{
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ImGui::Dummy(ImVec2(0, kSpaceM * s));
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ImGui::PushStyleColor(ImGuiCol_Text, ImGui::GetStyleColorVec4(ImGuiCol_TextDisabled));
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ImGui::TextWrapped("%s", page.details.c_str());
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ImGui::PopStyleColor();
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}
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ImGui::PopTextWrapPos();
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if (kCanQuit)
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{
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ImGui::Dummy(ImVec2(0, kSpaceS * s));
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if (page.firstFrame)
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ImGui::SetKeyboardFocusHere();
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bool quit = ImGui::Button("Quit");
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if (quit || ImGui::IsKeyPressed(ImGuiKey_GamepadFaceRight, false) || ImGui::IsKeyPressed(ImGuiKey_Escape, false)
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|| ImGui::IsKeyPressed(ImGuiKey_GamepadStart, false))
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page.quit = true;
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}
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page.firstFrame = false;
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ImGui::End();
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}
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}
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void RunStartupError(const std::string& title, const std::vector<std::string>& paragraphs, const std::string& details,
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const std::function<bool()>& runFrame)
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{
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if (!Ready())
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return;
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ErrorPage page{ title, paragraphs, details };
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SetModal([&page] { Draw(page); });
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fprintf(stderr, "[ui] showing \"%s\" (%s)\n", title.c_str(),
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kCanQuit ? "until it is closed" : "until the app is closed");
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while (!page.quit && runFrame())
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;
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SetModal(nullptr);
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fprintf(stderr, "[ui] \"%s\" closed\n", title.c_str());
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}
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}
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