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Fix getMousePos to be relative to the GD view #56

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Merged
Fleeym merged 3 commits into from
May 2, 2025
Merged

Fix getMousePos to be relative to the GD view #56

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444d522
Fix getMousePos to be relative to the GD view
Alphalaneous Apr 28, 2025
00a069c
Merge branch 'main' into Relative-Mouse-Pos
Alphalaneous May 2, 2025
cb71169
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Alphalaneous May 2, 2025
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34 changes: 34 additions & 0 deletions src/backend.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -11,6 +11,29 @@ using namespace cocos2d;

// based off https://github.com/matcool/gd-imgui-cocos

static bool g_useNormalPos = false;

CCPoint getMousePos_H() {
CCPoint mouse = cocos::getMousePos();
const auto pos = toVec2(mouse);

if (DevTools::get()->shouldUseGDWindow() && shouldPassEventsToGDButTransformed() && !g_useNormalPos) {
auto win = ImGui::GetMainViewport()->Size;
const auto gdRect = getGDWindowRect();

auto relativePos = ImVec2(
pos.x - gdRect.Min.x,
pos.y - gdRect.Min.y
);
auto x = (relativePos.x / gdRect.GetWidth()) * win.x;
auto y = (relativePos.y / gdRect.GetHeight()) * win.y;

mouse = toCocos(ImVec2(x, y));
}

return mouse;
}

void DevTools::setupPlatform() {
auto& io = ImGui::GetIO();

Expand All @@ -32,6 +55,15 @@ void DevTools::setupPlatform() {
m_fontTexture->retain();

io.Fonts->SetTexID(reinterpret_cast<ImTextureID>(static_cast<intptr_t>(m_fontTexture->getName())));

// fixes getMousePos to be relative to the GD view
#ifndef GEODE_IS_MOBILE
(void) Mod::get()->hook(
reinterpret_cast<void*>(addresser::getNonVirtual(&geode::cocos::getMousePos)),
&getMousePos_H,
"geode::cocos::getMousePos"
);
#endif
}

void DevTools::newFrame() {
Expand All @@ -50,7 +82,9 @@ void DevTools::newFrame() {
io.DeltaTime = director->getDeltaTime();

#ifdef GEODE_IS_DESKTOP
g_useNormalPos = true;
const auto mousePos = toVec2(geode::cocos::getMousePos());
g_useNormalPos = false;
io.AddMousePosEvent(mousePos.x, mousePos.y);
#endif

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