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Added ImGuiKeyModFlags. Added additional checks in EndFrame() to verify that io.KeyXXX values have not been tampered with between NewFrame() and EndFrame().

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This commit is contained in:
omar
2020-03-19 12:24:32 +01:00
parent d8824f9a9a
commit ccf0cc8584
3 changed files with 34 additions and 1 deletions
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21
imgui.cpp
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@ -3704,6 +3704,17 @@ static void NewFrameSanityChecks()
g.IO.ConfigWindowsResizeFromEdges = false;
}
static ImGuiKeyModFlags GetMergedKeyModFlags()
{
ImGuiContext& g = *GImGui;
ImGuiKeyModFlags key_mod_flags = ImGuiKeyModFlags_None;
if (g.IO.KeyCtrl) { key_mod_flags |= ImGuiKeyModFlags_Ctrl; }
if (g.IO.KeyShift) { key_mod_flags |= ImGuiKeyModFlags_Shift; }
if (g.IO.KeyAlt) { key_mod_flags |= ImGuiKeyModFlags_Alt; }
if (g.IO.KeySuper) { key_mod_flags |= ImGuiKeyModFlags_Super; }
return key_mod_flags;
}
void ImGui::NewFrame()
{
IM_ASSERT(GImGui != NULL && "No current context. Did you call ImGui::CreateContext() and ImGui::SetCurrentContext() ?");
@ -3805,6 +3816,8 @@ void ImGui::NewFrame()
g.DragDropWithinTarget = false;
// Update keyboard input state
// Synchronize io.KeyMods with individual modifiers io.KeyXXX bools
g.IO.KeyMods = GetMergedKeyModFlags();
memcpy(g.IO.KeysDownDurationPrev, g.IO.KeysDownDuration, sizeof(g.IO.KeysDownDuration));
for (int i = 0; i < IM_ARRAYSIZE(g.IO.KeysDown); i++)
g.IO.KeysDownDuration[i] = g.IO.KeysDown[i] ? (g.IO.KeysDownDuration[i] < 0.0f ? 0.0f : g.IO.KeysDownDuration[i] + g.IO.DeltaTime) : -1.0f;
@ -6720,9 +6733,15 @@ bool ImGui::DebugCheckVersionAndDataLayout(const char* version, size_t sz_io, si
static void ImGui::ErrorCheckEndFrame()
{
ImGuiContext& g = *GImGui;
// Verify that io.KeyXXX fields haven't been tampered with. Key mods shoudl not be modified between NewFrame() and EndFrame()
const ImGuiKeyModFlags expected_key_mod_flags = GetMergedKeyModFlags();
IM_ASSERT(g.IO.KeyMods == expected_key_mod_flags && "Mismatching io.KeyCtrl/io.KeyShift/io.KeyAlt/io.KeySuper vs io.KeyMods");
IM_UNUSED(expected_key_mod_flags);
// Report when there is a mismatch of Begin/BeginChild vs End/EndChild calls. Important: Remember that the Begin/BeginChild API requires you
// to always call End/EndChild even if Begin/BeginChild returns false! (this is unfortunately inconsistent with most other Begin* API).
ImGuiContext& g = *GImGui;
if (g.CurrentWindowStack.Size != 1)
{
if (g.CurrentWindowStack.Size > 1)