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Updating demo with ImGuiWindowFlags_ResizeFromAnySide (was: Adding mouse cursor support in backends) #1495

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Updating demo with ImGuiWindowFlags_ResizeFromAnySide (was: Adding mouse cursor support in backends) #1495

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7aa58bb
Updating imgui demo to show off ImGuiWindowFlags_ResizeFromAnySide. A…
Dec 11, 2017
fd11e5a
Attempt at getting ImGui and Windows cursors to play well together.
Dec 12, 2017
2f2e138
Figured out that LOWORD(lParam) resolves to hit test. There are a bun…
Dec 12, 2017
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37 changes: 36 additions & 1 deletion examples/directx10_example/imgui_impl_dx10.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -606,8 +606,43 @@ void ImGui_ImplDX10_NewFrame()
}

// Hide OS mouse cursor if ImGui is drawing it
if (io.MouseDrawCursor)
if(io.MouseDrawCursor)
{
SetCursor(NULL);
}
else
{
HCURSOR cursor = NULL;

switch(ImGui::GetMouseCursor())
{
case ImGuiMouseCursor_None:
break;
case ImGuiMouseCursor_Arrow:
cursor = LoadCursor(NULL, IDC_ARROW);
break;
case ImGuiMouseCursor_TextInput:
cursor = LoadCursor(NULL, IDC_IBEAM);
break;
case ImGuiMouseCursor_Move:
cursor = LoadCursor(NULL, IDC_SIZEALL);
break;
case ImGuiMouseCursor_ResizeNS:
cursor = LoadCursor(NULL, IDC_SIZENS);
break;
case ImGuiMouseCursor_ResizeEW:
cursor = LoadCursor(NULL, IDC_SIZEWE);
break;
case ImGuiMouseCursor_ResizeNESW:
cursor = LoadCursor(NULL, IDC_SIZENESW);
break;
case ImGuiMouseCursor_ResizeNWSE:
cursor = LoadCursor(NULL, IDC_SIZENWSE);
break;
}

SetCursor(cursor);
}

// Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
ImGui::NewFrame();
Expand Down
94 changes: 91 additions & 3 deletions examples/directx11_example/imgui_impl_dx11.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -37,6 +37,10 @@ static ID3D11BlendState* g_pBlendState = NULL;
static ID3D11DepthStencilState* g_pDepthStencilState = NULL;
static int g_VertexBufferSize = 5000, g_IndexBufferSize = 10000;

static HCURSOR g_NativeCursors[ImGuiMouseCursor_Count_] = {NULL};
static bool g_WindowsSetCursorThisFrame = false;
ImGuiMouseCursor g_LastCursorSet = ImGuiMouseCursor_None;

struct VERTEX_CONSTANT_BUFFER
{
float mvp[4][4];
Expand Down Expand Up @@ -249,9 +253,23 @@ static bool IsAnyMouseButtonDown()
// PS: In this Win32 handler, we use the capture API (GetCapture/SetCapture/ReleaseCapture) to be able to read mouse coordinations when dragging mouse outside of our window bounds.
IMGUI_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
char buffer[1024];

ImGuiIO& io = ImGui::GetIO();
switch (msg)
{
case WM_CREATE:
{
g_NativeCursors[ImGuiMouseCursor_Arrow] = LoadCursor(NULL, IDC_ARROW);
g_NativeCursors[ImGuiMouseCursor_TextInput] = LoadCursor(NULL, IDC_IBEAM);
g_NativeCursors[ImGuiMouseCursor_Move] = LoadCursor(NULL, IDC_SIZEALL);
g_NativeCursors[ImGuiMouseCursor_ResizeNS] = LoadCursor(NULL, IDC_SIZENS);
g_NativeCursors[ImGuiMouseCursor_ResizeEW] = LoadCursor(NULL, IDC_SIZEWE);
g_NativeCursors[ImGuiMouseCursor_ResizeNESW] = LoadCursor(NULL, IDC_SIZENESW);
g_NativeCursors[ImGuiMouseCursor_ResizeNWSE] = LoadCursor(NULL, IDC_SIZENWSE);

return 0;
}
case WM_LBUTTONDOWN:
case WM_RBUTTONDOWN:
case WM_MBUTTONDOWN:
Expand Down Expand Up @@ -300,6 +318,65 @@ IMGUI_API LRESULT ImGui_ImplWin32_WndProcHandler(HWND hwnd, UINT msg, WPARAM wPa
if (wParam > 0 && wParam < 0x10000)
io.AddInputCharacter((unsigned short)wParam);
return 0;
case WM_SETCURSOR:
if(g_hWnd == (HWND)wParam)
{
if(!io.MouseDrawCursor)
{
switch(LOWORD(lParam))
{
case HTCLIENT: //window area
SetCursor(g_NativeCursors[ImGui::GetMouseCursor()]);
g_LastCursorSet = ImGui::GetMouseCursor();
break;
case HTNOWHERE:
case HTCAPTION: //title bar
case HTMENU:
case HTSYSMENU: //window icon title bar
case HTMINBUTTON: //minimize button
case HTMAXBUTTON: //maximize button
case HTBORDER:
case HTCLOSE: //close window button
SetCursor(g_NativeCursors[ImGuiMouseCursor_Arrow]);
ImGui::SetMouseCursor(ImGuiMouseCursor_Arrow);
break;
case HTLEFT: //left border
case HTRIGHT: //right border
SetCursor(g_NativeCursors[ImGuiMouseCursor_ResizeEW]);
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeEW);
break;
case HTTOP: //top border
case HTBOTTOM: //bottom border
SetCursor(g_NativeCursors[ImGuiMouseCursor_ResizeNS]);
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeNS);
break;
case HTTOPRIGHT: //top right
case HTBOTTOMLEFT: //bottom left
SetCursor(g_NativeCursors[ImGuiMouseCursor_ResizeNESW]);
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeNS);
break;
case HTTOPLEFT: //top left
case HTBOTTOMRIGHT: //bottom right
SetCursor(g_NativeCursors[ImGuiMouseCursor_ResizeNWSE]);
ImGui::SetMouseCursor(ImGuiMouseCursor_ResizeNWSE);
break;
}
}
else
{
SetCursor(NULL);
}

g_WindowsSetCursorThisFrame = true;

return TRUE;
}
else
{
return FALSE;
}

return 0;
}
return 0;
}
Expand Down Expand Up @@ -608,9 +685,20 @@ void ImGui_ImplDX11_NewFrame()
SetCursorPos(pos.x, pos.y);
}

// Hide OS mouse cursor if ImGui is drawing it
if (io.MouseDrawCursor)
SetCursor(NULL);
if(!g_WindowsSetCursorThisFrame && ImGui::GetMouseCursor() != g_LastCursorSet)
{
if(io.MouseDrawCursor)
{
SetCursor(NULL);
}
else
{
assert(ImGui::GetMouseCursor() != ImGuiMouseCursor_None);
SetCursor(g_NativeCursors[ImGui::GetMouseCursor()]);
}
}

g_WindowsSetCursorThisFrame = false;

// Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
ImGui::NewFrame();
Expand Down
37 changes: 36 additions & 1 deletion examples/directx9_example/imgui_impl_dx9.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -383,8 +383,43 @@ void ImGui_ImplDX9_NewFrame()
}

// Hide OS mouse cursor if ImGui is drawing it
if (io.MouseDrawCursor)
if(io.MouseDrawCursor)
{
SetCursor(NULL);
}
else
{
HCURSOR cursor = NULL;

switch(ImGui::GetMouseCursor())
{
case ImGuiMouseCursor_None:
break;
case ImGuiMouseCursor_Arrow:
cursor = LoadCursor(NULL, IDC_ARROW);
break;
case ImGuiMouseCursor_TextInput:
cursor = LoadCursor(NULL, IDC_IBEAM);
break;
case ImGuiMouseCursor_Move:
cursor = LoadCursor(NULL, IDC_SIZEALL);
break;
case ImGuiMouseCursor_ResizeNS:
cursor = LoadCursor(NULL, IDC_SIZENS);
break;
case ImGuiMouseCursor_ResizeEW:
cursor = LoadCursor(NULL, IDC_SIZEWE);
break;
case ImGuiMouseCursor_ResizeNESW:
cursor = LoadCursor(NULL, IDC_SIZENESW);
break;
case ImGuiMouseCursor_ResizeNWSE:
cursor = LoadCursor(NULL, IDC_SIZENWSE);
break;
}

SetCursor(cursor);
}

// Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
ImGui::NewFrame();
Expand Down
52 changes: 51 additions & 1 deletion examples/opengl2_example/imgui_impl_glfw.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,12 @@

// Data
static GLFWwindow* g_Window = NULL;
static GLFWcursor* g_ArrowCursor = NULL;
static GLFWcursor* g_VResizeCursor = NULL;
static GLFWcursor* g_HResizeCursor = NULL;
static GLFWcursor* g_IBeamCursor = NULL;
static GLFWcursor* g_HandCursor = NULL;
static GLFWcursor* g_CrosshairCursor = NULL;
static double g_Time = 0.0f;
static bool g_MouseJustPressed[3] = { false, false, false };
static float g_MouseWheel = 0.0f;
Expand Down Expand Up @@ -202,6 +208,12 @@ void ImGui_ImplGlfwGL2_InvalidateDeviceObjects()
bool ImGui_ImplGlfwGL2_Init(GLFWwindow* window, bool install_callbacks)
{
g_Window = window;
g_ArrowCursor = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
g_IBeamCursor = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
g_CrosshairCursor = glfwCreateStandardCursor(GLFW_CROSSHAIR_CURSOR);
g_HandCursor = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
g_HResizeCursor = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
g_VResizeCursor = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);

ImGuiIO& io = ImGui::GetIO();
io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
Expand Down Expand Up @@ -300,7 +312,45 @@ void ImGui_ImplGlfwGL2_NewFrame()
g_MouseWheel = 0.0f;

// Hide OS mouse cursor if ImGui is drawing it
glfwSetInputMode(g_Window, GLFW_CURSOR, io.MouseDrawCursor ? GLFW_CURSOR_HIDDEN : GLFW_CURSOR_NORMAL);
if(io.MouseDrawCursor)
{
glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
}
else
{
glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);

GLFWcursor *cursor = NULL;

switch(ImGui::GetMouseCursor())
{
case ImGuiMouseCursor_None:
break;
case ImGuiMouseCursor_Arrow:
cursor = g_ArrowCursor;
break;
case ImGuiMouseCursor_TextInput:
cursor = g_IBeamCursor;
break;
case ImGuiMouseCursor_Move:
cursor = g_HandCursor;
break;
case ImGuiMouseCursor_ResizeNS:
cursor = g_VResizeCursor;
break;
case ImGuiMouseCursor_ResizeEW:
cursor = g_HResizeCursor;
break;
case ImGuiMouseCursor_ResizeNESW:
cursor = g_ArrowCursor;
break;
case ImGuiMouseCursor_ResizeNWSE:
cursor = g_ArrowCursor;
break;
}

glfwSetCursor(g_Window, cursor);
}

// Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
ImGui::NewFrame();
Expand Down
52 changes: 51 additions & 1 deletion examples/opengl3_example/imgui_impl_glfw_gl3.cpp
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -23,6 +23,12 @@

// Data
static GLFWwindow* g_Window = NULL;
static GLFWcursor* g_ArrowCursor = NULL;
static GLFWcursor* g_VResizeCursor = NULL;
static GLFWcursor* g_HResizeCursor = NULL;
static GLFWcursor* g_IBeamCursor = NULL;
static GLFWcursor* g_HandCursor = NULL;
static GLFWcursor* g_CrosshairCursor = NULL;
static double g_Time = 0.0f;
static bool g_MouseJustPressed[3] = { false, false, false };
static float g_MouseWheel = 0.0f;
Expand Down Expand Up @@ -314,6 +320,12 @@ void ImGui_ImplGlfwGL3_InvalidateDeviceObjects()
bool ImGui_ImplGlfwGL3_Init(GLFWwindow* window, bool install_callbacks)
{
g_Window = window;
g_ArrowCursor = glfwCreateStandardCursor(GLFW_ARROW_CURSOR);
g_IBeamCursor = glfwCreateStandardCursor(GLFW_IBEAM_CURSOR);
g_CrosshairCursor = glfwCreateStandardCursor(GLFW_CROSSHAIR_CURSOR);
g_HandCursor = glfwCreateStandardCursor(GLFW_HAND_CURSOR);
g_HResizeCursor = glfwCreateStandardCursor(GLFW_HRESIZE_CURSOR);
g_VResizeCursor = glfwCreateStandardCursor(GLFW_VRESIZE_CURSOR);

ImGuiIO& io = ImGui::GetIO();
io.KeyMap[ImGuiKey_Tab] = GLFW_KEY_TAB; // Keyboard mapping. ImGui will use those indices to peek into the io.KeyDown[] array.
Expand Down Expand Up @@ -412,7 +424,45 @@ void ImGui_ImplGlfwGL3_NewFrame()
g_MouseWheel = 0.0f;

// Hide OS mouse cursor if ImGui is drawing it
glfwSetInputMode(g_Window, GLFW_CURSOR, io.MouseDrawCursor ? GLFW_CURSOR_HIDDEN : GLFW_CURSOR_NORMAL);
if(io.MouseDrawCursor)
{
glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_HIDDEN);
}
else
{
glfwSetInputMode(g_Window, GLFW_CURSOR, GLFW_CURSOR_NORMAL);

GLFWcursor *cursor = NULL;

switch(ImGui::GetMouseCursor())
{
case ImGuiMouseCursor_None:
break;
case ImGuiMouseCursor_Arrow:
cursor = g_ArrowCursor;
break;
case ImGuiMouseCursor_TextInput:
cursor = g_IBeamCursor;
break;
case ImGuiMouseCursor_Move:
cursor = g_HandCursor;
break;
case ImGuiMouseCursor_ResizeNS:
cursor = g_VResizeCursor;
break;
case ImGuiMouseCursor_ResizeEW:
cursor = g_HResizeCursor;
break;
case ImGuiMouseCursor_ResizeNESW:
cursor = g_ArrowCursor;
break;
case ImGuiMouseCursor_ResizeNWSE:
cursor = g_ArrowCursor;
break;
}

glfwSetCursor(g_Window, cursor);
}

// Start the frame. This call will update the io.WantCaptureMouse, io.WantCaptureKeyboard flag that you can use to dispatch inputs (or not) to your application.
ImGui::NewFrame();
Expand Down
15 changes: 9 additions & 6 deletions imgui_demo.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -171,15 +171,17 @@ void ImGui::ShowTestWindow(bool* p_open)
static bool no_resize = false;
static bool no_collapse = false;
static bool no_close = false;
static bool resize_any_side = false;

// Demonstrate the various window flags. Typically you would just use the default.
ImGuiWindowFlags window_flags = 0;
if (no_titlebar) window_flags |= ImGuiWindowFlags_NoTitleBar;
if (no_scrollbar) window_flags |= ImGuiWindowFlags_NoScrollbar;
if (!no_menu) window_flags |= ImGuiWindowFlags_MenuBar;
if (no_move) window_flags |= ImGuiWindowFlags_NoMove;
if (no_resize) window_flags |= ImGuiWindowFlags_NoResize;
if (no_collapse) window_flags |= ImGuiWindowFlags_NoCollapse;
if (no_titlebar) window_flags |= ImGuiWindowFlags_NoTitleBar;
if (no_scrollbar) window_flags |= ImGuiWindowFlags_NoScrollbar;
if (!no_menu) window_flags |= ImGuiWindowFlags_MenuBar;
if (no_move) window_flags |= ImGuiWindowFlags_NoMove;
if (no_resize) window_flags |= ImGuiWindowFlags_NoResize;
if (no_collapse) window_flags |= ImGuiWindowFlags_NoCollapse;
if (resize_any_side) window_flags |= ImGuiWindowFlags_ResizeFromAnySide;
if (no_close) p_open = NULL; // Don't pass our bool* to Begin

ImGui::SetNextWindowSize(ImVec2(550,680), ImGuiCond_FirstUseEver);
Expand Down Expand Up @@ -245,6 +247,7 @@ void ImGui::ShowTestWindow(bool* p_open)
ImGui::Checkbox("No resize", &no_resize); ImGui::SameLine(300);
ImGui::Checkbox("No collapse", &no_collapse);
ImGui::Checkbox("No close", &no_close);
ImGui::Checkbox("Resize from any side", &resize_any_side);

if (ImGui::TreeNode("Style"))
{
Expand Down