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Examples: Simplified mouse wheel handling. (#1463)

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This commit is contained in:
omar
2018-01-20 12:45:31 +01:00
parent 7dea158175
commit 7e7c017b75
6 changed files with 23 additions and 47 deletions
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18
examples/vulkan_example/imgui_impl_glfw_vulkan.cpp
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@ -24,8 +24,7 @@
// GLFW Data
static GLFWwindow* g_Window = NULL;
static double g_Time = 0.0f;
static bool g_MousePressed[3] = { false, false, false };
static ImVec2 g_MouseWheel = ImVec2(0.0f, 0.0f);
static bool g_MouseJustPressed[3] = { false, false, false };
// Vulkan Data
static VkAllocationCallbacks* g_Allocator = NULL;
@ -327,13 +326,14 @@ static void ImGui_ImplGlfwVulkan_SetClipboardText(void* user_data, const char* t
void ImGui_ImplGlfwVulkan_MouseButtonCallback(GLFWwindow*, int button, int action, int /*mods*/)
{
if (action == GLFW_PRESS && button >= 0 && button < 3)
g_MousePressed[button] = true;
g_MouseJustPressed[button] = true;
}
void ImGui_ImplGlfwVulkan_ScrollCallback(GLFWwindow*, double xoffset, double yoffset)
{
g_MouseWheel.x += (float)xoffset; // Use fractional mouse wheel.
g_MouseWheel.y += (float)yoffset;
ImGuiIO& io = ImGui::GetIO();
io.MouseWheelH += (float)xoffset;
io.MouseWheel += (float)yoffset;
}
void ImGui_ImplGlfwVulkan_KeyCallback(GLFWwindow*, int key, int, int action, int mods)
@ -822,14 +822,10 @@ void ImGui_ImplGlfwVulkan_NewFrame()
for (int i = 0; i < 3; i++)
{
io.MouseDown[i] = g_MousePressed[i] || glfwGetMouseButton(g_Window, i) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
g_MousePressed[i] = false;
io.MouseDown[i] = g_MouseJustPressed[i] || glfwGetMouseButton(g_Window, i) != 0; // If a mouse press event came, always pass it as "mouse held this frame", so we don't miss click-release events that are shorter than 1 frame.
g_MouseJustPressed[i] = false;
}
io.MouseWheel = g_MouseWheel.y;
io.MouseWheelH = g_MouseWheel.x;
g_MouseWheel.x = g_MouseWheel.x = 0.0f;
// Hide OS mouse cursor if ImGui is drawing it
glfwSetInputMode(g_Window, GLFW_CURSOR, io.MouseDrawCursor ? GLFW_CURSOR_HIDDEN : GLFW_CURSOR_NORMAL);