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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "pdf/pdfium/pdfium_engine.h" | 5 #include "pdf/pdfium/pdfium_engine.h" |
6 | 6 |
7 #include <math.h> | 7 #include <math.h> |
8 #include <stddef.h> | 8 #include <stddef.h> |
9 #include <stdint.h> | 9 #include <stdint.h> |
10 | 10 |
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1630 SetInFormTextArea(false); | 1630 SetInFormTextArea(false); |
1631 } | 1631 } |
1632 | 1632 |
1633 void PDFiumEngine::SetFormSelectedText(FPDF_FORMHANDLE form_handle, | 1633 void PDFiumEngine::SetFormSelectedText(FPDF_FORMHANDLE form_handle, |
1634 FPDF_PAGE page) { | 1634 FPDF_PAGE page) { |
1635 unsigned long form_sel_text_len = | 1635 unsigned long form_sel_text_len = |
1636 FORM_GetSelectedText(form_handle, page, nullptr, 0); | 1636 FORM_GetSelectedText(form_handle, page, nullptr, 0); |
1637 | 1637 |
1638 // Check to see if there is selected text in the form. When | 1638 // Check to see if there is selected text in the form. When |
1639 // |form_sel_text_len| is 2, that represents a wide string with just a | 1639 // |form_sel_text_len| is 2, that represents a wide string with just a |
1640 // NUL-terminator. | 1640 // NUL-terminator. |
Lei Zhang
2017/07/05 19:31:12
Update the comment, now that the if-statement has
drgage
2017/07/06 19:13:55
Done.
| |
1641 if (form_sel_text_len <= 2) | 1641 if (form_sel_text_len <= 2 && selected_form_text_.empty()) |
1642 return; | 1642 return; |
1643 | 1643 |
1644 base::string16 selected_form_text16; | 1644 base::string16 selected_form_text16; |
1645 PDFiumAPIStringBufferSizeInBytesAdapter<base::string16> string_adapter( | 1645 PDFiumAPIStringBufferSizeInBytesAdapter<base::string16> string_adapter( |
1646 &selected_form_text16, form_sel_text_len, false); | 1646 &selected_form_text16, form_sel_text_len, false); |
1647 string_adapter.Close(FORM_GetSelectedText( | 1647 string_adapter.Close(FORM_GetSelectedText( |
1648 form_handle, page, string_adapter.GetData(), form_sel_text_len)); | 1648 form_handle, page, string_adapter.GetData(), form_sel_text_len)); |
1649 | 1649 |
1650 std::string selected_form_text = base::UTF16ToUTF8(selected_form_text16); | 1650 // Update previous and current selections, then compare them to check if |
1651 if (!selected_form_text.empty()) { | 1651 // selection has changed. If so, set plugin text selection. |
1652 pp::PDF::SetSelectedText(GetPluginInstance(), selected_form_text.c_str()); | 1652 std::string selected_form_text = selected_form_text_; |
1653 } | 1653 selected_form_text_ = base::UTF16ToUTF8(selected_form_text16); |
1654 if (selected_form_text != selected_form_text_) | |
1655 pp::PDF::SetSelectedText(GetPluginInstance(), selected_form_text_.c_str()); | |
1654 } | 1656 } |
1655 | 1657 |
1656 void PDFiumEngine::PrintEnd() { | 1658 void PDFiumEngine::PrintEnd() { |
1657 FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_DP); | 1659 FORM_DoDocumentAAction(form_, FPDFDOC_AACTION_DP); |
1658 } | 1660 } |
1659 | 1661 |
1660 PDFiumPage::Area PDFiumEngine::GetCharIndex(const pp::MouseInputEvent& event, | 1662 PDFiumPage::Area PDFiumEngine::GetCharIndex(const pp::MouseInputEvent& event, |
1661 int* page_index, | 1663 int* page_index, |
1662 int* char_index, | 1664 int* char_index, |
1663 int* form_type, | 1665 int* form_type, |
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1712 SelectionChangeInvalidator selection_invalidator(this); | 1714 SelectionChangeInvalidator selection_invalidator(this); |
1713 selection_.clear(); | 1715 selection_.clear(); |
1714 return true; | 1716 return true; |
1715 } | 1717 } |
1716 | 1718 |
1717 if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT && | 1719 if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT && |
1718 event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) { | 1720 event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) { |
1719 return false; | 1721 return false; |
1720 } | 1722 } |
1721 | 1723 |
1724 SetMouseLeftButtonDown(event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT); | |
1725 | |
1722 SelectionChangeInvalidator selection_invalidator(this); | 1726 SelectionChangeInvalidator selection_invalidator(this); |
1723 selection_.clear(); | 1727 selection_.clear(); |
1724 | 1728 |
1725 int page_index = -1; | 1729 int page_index = -1; |
1726 int char_index = -1; | 1730 int char_index = -1; |
1727 int form_type = FPDF_FORMFIELD_UNKNOWN; | 1731 int form_type = FPDF_FORMFIELD_UNKNOWN; |
1728 PDFiumPage::LinkTarget target; | 1732 PDFiumPage::LinkTarget target; |
1729 PDFiumPage::Area area = | 1733 PDFiumPage::Area area = |
1730 GetCharIndex(event, &page_index, &char_index, &form_type, &target); | 1734 GetCharIndex(event, &page_index, &char_index, &form_type, &target); |
1731 mouse_down_state_.Set(area, target); | 1735 mouse_down_state_.Set(area, target); |
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1807 selection_.push_back(PDFiumRange(pages_[page_index].get(), start_index, | 1811 selection_.push_back(PDFiumRange(pages_[page_index].get(), start_index, |
1808 end_index - start_index)); | 1812 end_index - start_index)); |
1809 } | 1813 } |
1810 | 1814 |
1811 bool PDFiumEngine::OnMouseUp(const pp::MouseInputEvent& event) { | 1815 bool PDFiumEngine::OnMouseUp(const pp::MouseInputEvent& event) { |
1812 if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT && | 1816 if (event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_LEFT && |
1813 event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) { | 1817 event.GetButton() != PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) { |
1814 return false; | 1818 return false; |
1815 } | 1819 } |
1816 | 1820 |
1821 if (event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_LEFT) | |
1822 SetMouseLeftButtonDown(false); | |
1823 | |
1817 int page_index = -1; | 1824 int page_index = -1; |
1818 int char_index = -1; | 1825 int char_index = -1; |
1819 int form_type = FPDF_FORMFIELD_UNKNOWN; | 1826 int form_type = FPDF_FORMFIELD_UNKNOWN; |
1820 PDFiumPage::LinkTarget target; | 1827 PDFiumPage::LinkTarget target; |
1821 PDFiumPage::Area area = | 1828 PDFiumPage::Area area = |
1822 GetCharIndex(event, &page_index, &char_index, &form_type, &target); | 1829 GetCharIndex(event, &page_index, &char_index, &form_type, &target); |
1823 | 1830 |
1824 // Open link on mouse up for same link for which mouse down happened earlier. | 1831 // Open link on mouse up for same link for which mouse down happened earlier. |
1825 if (mouse_down_state_.Matches(area, target)) { | 1832 if (mouse_down_state_.Matches(area, target)) { |
1826 if (area == PDFiumPage::WEBLINK_AREA) { | 1833 if (area == PDFiumPage::WEBLINK_AREA) { |
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1850 if (event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) | 1857 if (event.GetButton() == PP_INPUTEVENT_MOUSEBUTTON_MIDDLE) |
1851 return false; | 1858 return false; |
1852 | 1859 |
1853 if (page_index != -1) { | 1860 if (page_index != -1) { |
1854 double page_x, page_y; | 1861 double page_x, page_y; |
1855 pp::Point point = event.GetPosition(); | 1862 pp::Point point = event.GetPosition(); |
1856 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); | 1863 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); |
1857 FORM_OnLButtonUp(form_, pages_[page_index]->GetPage(), 0, page_x, page_y); | 1864 FORM_OnLButtonUp(form_, pages_[page_index]->GetPage(), 0, page_x, page_y); |
1858 } | 1865 } |
1859 | 1866 |
1860 if (area == PDFiumPage::FORM_TEXT_AREA && last_page_mouse_down_ != -1) | |
1861 SetFormSelectedText(form_, pages_[last_page_mouse_down_]->GetPage()); | |
1862 | |
1863 if (!selecting_) | 1867 if (!selecting_) |
1864 return false; | 1868 return false; |
1865 | 1869 |
1866 SetSelecting(false); | 1870 SetSelecting(false); |
1867 return true; | 1871 return true; |
1868 } | 1872 } |
1869 | 1873 |
1870 bool PDFiumEngine::OnMouseMove(const pp::MouseInputEvent& event) { | 1874 bool PDFiumEngine::OnMouseMove(const pp::MouseInputEvent& event) { |
1871 int page_index = -1; | 1875 int page_index = -1; |
1872 int char_index = -1; | 1876 int char_index = -1; |
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1917 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); | 1921 DeviceToPage(page_index, point.x(), point.y(), &page_x, &page_y); |
1918 FORM_OnMouseMove(form_, pages_[page_index]->GetPage(), 0, page_x, page_y); | 1922 FORM_OnMouseMove(form_, pages_[page_index]->GetPage(), 0, page_x, page_y); |
1919 } | 1923 } |
1920 | 1924 |
1921 client_->UpdateCursor(cursor); | 1925 client_->UpdateCursor(cursor); |
1922 std::string url = GetLinkAtPosition(event.GetPosition()); | 1926 std::string url = GetLinkAtPosition(event.GetPosition()); |
1923 if (url != link_under_cursor_) { | 1927 if (url != link_under_cursor_) { |
1924 link_under_cursor_ = url; | 1928 link_under_cursor_ = url; |
1925 pp::PDF::SetLinkUnderCursor(GetPluginInstance(), url.c_str()); | 1929 pp::PDF::SetLinkUnderCursor(GetPluginInstance(), url.c_str()); |
1926 } | 1930 } |
1931 | |
1932 // If in form text area while left mouse button is held down, check if form | |
1933 // text selection needs to be updated. | |
1934 if (mouse_left_button_down_ && area == PDFiumPage::FORM_TEXT_AREA && | |
1935 last_page_mouse_down_ != -1) { | |
1936 SetFormSelectedText(form_, pages_[last_page_mouse_down_]->GetPage()); | |
1937 } | |
1938 | |
1927 // No need to swallow the event, since this might interfere with the | 1939 // No need to swallow the event, since this might interfere with the |
1928 // scrollbars if the user is dragging them. | 1940 // scrollbars if the user is dragging them. |
1929 return false; | 1941 return false; |
1930 } | 1942 } |
1931 | 1943 |
1932 // We're selecting but right now we're not over text, so don't change the | 1944 // We're selecting but right now we're not over text, so don't change the |
1933 // current selection. | 1945 // current selection. |
1934 if (area != PDFiumPage::TEXT_AREA && area != PDFiumPage::WEBLINK_AREA && | 1946 if (area != PDFiumPage::TEXT_AREA && area != PDFiumPage::WEBLINK_AREA && |
1935 area != PDFiumPage::DOCLINK_AREA) { | 1947 area != PDFiumPage::DOCLINK_AREA) { |
1936 return false; | 1948 return false; |
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2011 // http://chrome-corpsvn.mtv.corp.google.com/viewvc?view=rev&root=chrome&rev ision=31805 | 2023 // http://chrome-corpsvn.mtv.corp.google.com/viewvc?view=rev&root=chrome&rev ision=31805 |
2012 // for more information. So just fake one since PDFium uses it. | 2024 // for more information. So just fake one since PDFium uses it. |
2013 std::string str; | 2025 std::string str; |
2014 str.push_back(event.GetKeyCode()); | 2026 str.push_back(event.GetKeyCode()); |
2015 pp::KeyboardInputEvent synthesized(pp::KeyboardInputEvent( | 2027 pp::KeyboardInputEvent synthesized(pp::KeyboardInputEvent( |
2016 client_->GetPluginInstance(), PP_INPUTEVENT_TYPE_CHAR, | 2028 client_->GetPluginInstance(), PP_INPUTEVENT_TYPE_CHAR, |
2017 event.GetTimeStamp(), event.GetModifiers(), event.GetKeyCode(), str)); | 2029 event.GetTimeStamp(), event.GetModifiers(), event.GetKeyCode(), str)); |
2018 OnChar(synthesized); | 2030 OnChar(synthesized); |
2019 } | 2031 } |
2020 | 2032 |
2021 // If form selected text is empty and key pressed within form text area, | |
2022 // plugin text selection should be cleared. | |
2023 if (in_form_text_area_ && | |
2024 FORM_GetSelectedText(form_, pages_[last_page_mouse_down_]->GetPage(), | |
2025 nullptr, 0) <= 2) { | |
2026 pp::PDF::SetSelectedText(GetPluginInstance(), ""); | |
2027 } | |
2028 | |
2029 return rv; | 2033 return rv; |
2030 } | 2034 } |
2031 | 2035 |
2032 bool PDFiumEngine::OnKeyUp(const pp::KeyboardInputEvent& event) { | 2036 bool PDFiumEngine::OnKeyUp(const pp::KeyboardInputEvent& event) { |
2033 if (last_page_mouse_down_ == -1) | 2037 if (last_page_mouse_down_ == -1) |
2034 return false; | 2038 return false; |
2035 | 2039 |
2040 // Check if form text selection needs to be updated. | |
2036 if (in_form_text_area_) { | 2041 if (in_form_text_area_) { |
2037 if (event.GetKeyCode() == ui::VKEY_SHIFT) | 2042 SetFormSelectedText(form_, pages_[last_page_mouse_down_]->GetPage()); |
2038 SetFormSelectedText(form_, pages_[last_page_mouse_down_]->GetPage()); | |
2039 } | 2043 } |
2040 | 2044 |
2041 return !!FORM_OnKeyUp(form_, pages_[last_page_mouse_down_]->GetPage(), | 2045 return !!FORM_OnKeyUp(form_, pages_[last_page_mouse_down_]->GetPage(), |
2042 event.GetKeyCode(), event.GetModifiers()); | 2046 event.GetKeyCode(), event.GetModifiers()); |
2043 } | 2047 } |
2044 | 2048 |
2045 bool PDFiumEngine::OnChar(const pp::KeyboardInputEvent& event) { | 2049 bool PDFiumEngine::OnChar(const pp::KeyboardInputEvent& event) { |
2046 if (last_page_mouse_down_ == -1) | 2050 if (last_page_mouse_down_ == -1) |
2047 return false; | 2051 return false; |
2048 | 2052 |
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3609 selecting_ = selecting; | 3613 selecting_ = selecting; |
3610 if (selecting_ != was_selecting) | 3614 if (selecting_ != was_selecting) |
3611 client_->IsSelectingChanged(selecting); | 3615 client_->IsSelectingChanged(selecting); |
3612 } | 3616 } |
3613 | 3617 |
3614 void PDFiumEngine::SetInFormTextArea(bool in_form_text_area) { | 3618 void PDFiumEngine::SetInFormTextArea(bool in_form_text_area) { |
3615 client_->FormTextFieldFocusChange(in_form_text_area); | 3619 client_->FormTextFieldFocusChange(in_form_text_area); |
3616 in_form_text_area_ = in_form_text_area; | 3620 in_form_text_area_ = in_form_text_area; |
3617 } | 3621 } |
3618 | 3622 |
3623 void PDFiumEngine::SetMouseLeftButtonDown(bool is_mouse_left_button_down) { | |
3624 mouse_left_button_down_ = is_mouse_left_button_down; | |
3625 } | |
3626 | |
3619 void PDFiumEngine::ScheduleTouchTimer(const pp::TouchInputEvent& evt) { | 3627 void PDFiumEngine::ScheduleTouchTimer(const pp::TouchInputEvent& evt) { |
3620 touch_timers_[++next_touch_timer_id_] = evt; | 3628 touch_timers_[++next_touch_timer_id_] = evt; |
3621 client_->ScheduleTouchTimerCallback(next_touch_timer_id_, | 3629 client_->ScheduleTouchTimerCallback(next_touch_timer_id_, |
3622 kTouchLongPressTimeoutMs); | 3630 kTouchLongPressTimeoutMs); |
3623 } | 3631 } |
3624 | 3632 |
3625 void PDFiumEngine::KillTouchTimer(int timer_id) { | 3633 void PDFiumEngine::KillTouchTimer(int timer_id) { |
3626 touch_timers_.erase(timer_id); | 3634 touch_timers_.erase(timer_id); |
3627 } | 3635 } |
3628 | 3636 |
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4198 FPDF_DOCUMENT doc = | 4206 FPDF_DOCUMENT doc = |
4199 FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, nullptr); | 4207 FPDF_LoadMemDocument(pdf_buffer, pdf_buffer_size, nullptr); |
4200 if (!doc) | 4208 if (!doc) |
4201 return false; | 4209 return false; |
4202 bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0; | 4210 bool success = FPDF_GetPageSizeByIndex(doc, page_number, width, height) != 0; |
4203 FPDF_CloseDocument(doc); | 4211 FPDF_CloseDocument(doc); |
4204 return success; | 4212 return success; |
4205 } | 4213 } |
4206 | 4214 |
4207 } // namespace chrome_pdf | 4215 } // namespace chrome_pdf |
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