diff options
Diffstat (limited to 'xfa_test/pdf/fading_control.cc')
-rw-r--r-- | xfa_test/pdf/fading_control.cc | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/xfa_test/pdf/fading_control.cc b/xfa_test/pdf/fading_control.cc deleted file mode 100644 index 7e4d8ef63e..0000000000 --- a/xfa_test/pdf/fading_control.cc +++ /dev/null @@ -1,75 +0,0 @@ -// Copyright (c) 2012 The Chromium Authors. All rights reserved. -// Use of this source code is governed by a BSD-style license that can be -// found in the LICENSE file. - -#include "pdf/fading_control.h" - -#include <math.h> - -#include "base/logging.h" -#include "pdf/draw_utils.h" -#include "pdf/resource_consts.h" - -namespace chrome_pdf { - -FadingControl::FadingControl() - : alpha_shift_(0), timer_id_(0) { -} - -FadingControl::~FadingControl() { -} - -void FadingControl::OnTimerFired(uint32 timer_id) { - if (timer_id == timer_id_) { - int32 new_alpha = transparency() + alpha_shift_; - if (new_alpha <= kTransparentAlpha) { - Show(false, true); - OnFadeOutComplete(); - return; - } - if (new_alpha >= kOpaqueAlpha) { - AdjustTransparency(kOpaqueAlpha, true); - OnFadeInComplete(); - return; - } - - AdjustTransparency(static_cast<uint8>(new_alpha), true); - timer_id_ = owner()->ScheduleTimer(id(), kFadingTimeoutMs); - } -} - -// Fade In/Out control depending on visible flag over the time of time_ms. -void FadingControl::Fade(bool show, uint32 time_ms) { - DCHECK(time_ms != 0); - // Check if we already in the same state. - if (!visible() && !show) - return; - if (!visible() && show) { - Show(show, false); - AdjustTransparency(kTransparentAlpha, false); - OnFadeOutComplete(); - } - if (transparency() == kOpaqueAlpha && show) { - OnFadeInComplete(); - return; - } - - int delta = show ? kOpaqueAlpha - transparency() : transparency(); - double shift = - static_cast<double>(delta) * kFadingTimeoutMs / time_ms; - if (shift > delta) - alpha_shift_ = delta; - else - alpha_shift_ = static_cast<int>(ceil(shift)); - - if (alpha_shift_ == 0) - alpha_shift_ = 1; - - // If disabling, make alpha shift negative. - if (!show) - alpha_shift_ = -alpha_shift_; - - timer_id_ = owner()->ScheduleTimer(id(), kFadingTimeoutMs); -} - -} // namespace chrome_pdf |