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DragBehavior: Moving code around, in what should be a no-op, to simplify upcoming Nav diff (#323, #180)

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This commit is contained in:
ocornut 2016-07-18 17:09:22 +02:00
parent c816e6c742
commit eb405ab375
1 changed files with 13 additions and 12 deletions
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25
imgui.cpp
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@ -6769,32 +6769,33 @@ bool ImGui::DragBehavior(const ImRect& frame_bb, ImGuiID id, float* v, float v_s
g.DragLastMouseDelta = ImVec2(0.f, 0.f);
}
if (v_speed == 0.0f && (v_max - v_min) != 0.0f && (v_max - v_min) < FLT_MAX)
v_speed = (v_max - v_min) * g.DragSpeedDefaultRatio;
float v_cur = g.DragCurrentValue;
const ImVec2 mouse_drag_delta = GetMouseDragDelta(0, 1.0f);
if (fabsf(mouse_drag_delta.x - g.DragLastMouseDelta.x) > 0.0f)
{
float speed = v_speed;
if (speed == 0.0f && (v_max - v_min) != 0.0f && (v_max - v_min) < FLT_MAX)
speed = (v_max - v_min) * g.DragSpeedDefaultRatio;
if (g.IO.KeyShift && g.DragSpeedScaleFast >= 0.0f)
speed = speed * g.DragSpeedScaleFast;
if (g.IO.KeyAlt && g.DragSpeedScaleSlow >= 0.0f)
speed = speed * g.DragSpeedScaleSlow;
float adjust_delta = mouse_drag_delta.x - g.DragLastMouseDelta.x;
if (g.IO.KeyShift && g.DragSpeedScaleFast >= 0.0f)
adjust_delta *= g.DragSpeedScaleFast;
if (g.IO.KeyAlt && g.DragSpeedScaleSlow >= 0.0f)
adjust_delta *= g.DragSpeedScaleSlow;
adjust_delta *= v_speed;
float delta = (mouse_drag_delta.x - g.DragLastMouseDelta.x) * speed;
if (fabsf(adjust_delta) > 0.0f)
{
if (fabsf(power - 1.0f) > 0.001f)
{
// Logarithmic curve on both side of 0.0
float v0_abs = v_cur >= 0.0f ? v_cur : -v_cur;
float v0_sign = v_cur >= 0.0f ? 1.0f : -1.0f;
float v1 = powf(v0_abs, 1.0f / power) + (delta * v0_sign);
float v1 = powf(v0_abs, 1.0f / power) + (adjust_delta * v0_sign);
float v1_abs = v1 >= 0.0f ? v1 : -v1;
float v1_sign = v1 >= 0.0f ? 1.0f : -1.0f; // Crossed sign line
v_cur = powf(v1_abs, power) * v0_sign * v1_sign; // Reapply sign
}
else
{
v_cur += delta;
v_cur += adjust_delta;
}
g.DragLastMouseDelta.x = mouse_drag_delta.x;