summaryrefslogtreecommitdiff
path: root/core/fpdfdoc/cpdf_formcontrol.cpp
blob: dab59d773aa33a33101a9c066820be91267c7725 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
// Copyright 2016 PDFium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com

#include "core/fpdfdoc/cpdf_formcontrol.h"

#include <algorithm>

#include "core/fpdfapi/fpdf_page/cpdf_form.h"
#include "core/fpdfapi/fpdf_parser/cpdf_array.h"
#include "core/fpdfapi/fpdf_parser/cpdf_document.h"
#include "core/fpdfapi/fpdf_parser/cpdf_stream.h"
#include "core/fpdfapi/fpdf_parser/fpdf_parser_decode.h"
#include "core/fpdfapi/fpdf_render/cpdf_rendercontext.h"
#include "core/fpdfdoc/cpdf_interform.h"
#include "core/fxge/cfx_renderdevice.h"

namespace {

const FX_CHAR* const g_sHighlightingMode[] = {
    // Must match order of HighlightingMode enum.
    "N", "I", "O", "P", "T"};

}  // namespace

CPDF_FormControl::CPDF_FormControl(CPDF_FormField* pField,
                                   CPDF_Dictionary* pWidgetDict)
    : m_pField(pField),
      m_pWidgetDict(pWidgetDict),
      m_pForm(m_pField->m_pForm) {}

CFX_ByteString CPDF_FormControl::GetOnStateName() const {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn;
  CPDF_Dictionary* pAP = m_pWidgetDict->GetDictFor("AP");
  if (!pAP)
    return csOn;

  CPDF_Dictionary* pN = pAP->GetDictFor("N");
  if (!pN)
    return csOn;

  for (const auto& it : *pN) {
    if (it.first != "Off")
      return it.first;
  }
  return CFX_ByteString();
}

void CPDF_FormControl::SetOnStateName(const CFX_ByteString& csOn) {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csValue = csOn;
  if (csValue.IsEmpty())
    csValue = "Yes";
  else if (csValue == "Off")
    csValue = "Yes";

  CFX_ByteString csAS = m_pWidgetDict->GetStringFor("AS", "Off");
  if (csAS != "Off")
    m_pWidgetDict->SetNameFor("AS", csValue);

  CPDF_Dictionary* pAP = m_pWidgetDict->GetDictFor("AP");
  if (!pAP)
    return;

  for (const auto& it : *pAP) {
    CPDF_Object* pObj1 = it.second;
    if (!pObj1)
      continue;

    CPDF_Object* pObjDirect1 = pObj1->GetDirect();
    CPDF_Dictionary* pSubDict = pObjDirect1->AsDictionary();
    if (!pSubDict)
      continue;

    auto subdict_it = pSubDict->begin();
    while (subdict_it != pSubDict->end()) {
      const CFX_ByteString& csKey2 = subdict_it->first;
      CPDF_Object* pObj2 = subdict_it->second;
      ++subdict_it;
      if (!pObj2)
        continue;
      if (csKey2 != "Off") {
        pSubDict->ReplaceKey(csKey2, csValue);
        break;
      }
    }
  }
}

CFX_ByteString CPDF_FormControl::GetCheckedAPState() {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  if (GetType() == CPDF_FormField::RadioButton ||
      GetType() == CPDF_FormField::CheckBox) {
    if (ToArray(FPDF_GetFieldAttr(m_pField->m_pDict, "Opt"))) {
      int iIndex = m_pField->GetControlIndex(this);
      csOn.Format("%d", iIndex);
    }
  }
  if (csOn.IsEmpty())
    csOn = "Yes";
  return csOn;
}

CFX_WideString CPDF_FormControl::GetExportValue() const {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  if (GetType() == CPDF_FormField::RadioButton ||
      GetType() == CPDF_FormField::CheckBox) {
    if (CPDF_Array* pArray =
            ToArray(FPDF_GetFieldAttr(m_pField->m_pDict, "Opt"))) {
      int iIndex = m_pField->GetControlIndex(this);
      csOn = pArray->GetStringAt(iIndex);
    }
  }
  if (csOn.IsEmpty())
    csOn = "Yes";
  return PDF_DecodeText(csOn);
}

bool CPDF_FormControl::IsChecked() const {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  CFX_ByteString csAS = m_pWidgetDict->GetStringFor("AS");
  return csAS == csOn;
}

bool CPDF_FormControl::IsDefaultChecked() const {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CPDF_Object* pDV = FPDF_GetFieldAttr(m_pField->m_pDict, "DV");
  if (!pDV)
    return FALSE;

  CFX_ByteString csDV = pDV->GetString();
  CFX_ByteString csOn = GetOnStateName();
  return (csDV == csOn);
}

void CPDF_FormControl::CheckControl(FX_BOOL bChecked) {
  ASSERT(GetType() == CPDF_FormField::CheckBox ||
         GetType() == CPDF_FormField::RadioButton);
  CFX_ByteString csOn = GetOnStateName();
  CFX_ByteString csOldAS = m_pWidgetDict->GetStringFor("AS", "Off");
  CFX_ByteString csAS = "Off";
  if (bChecked)
    csAS = csOn;
  if (csOldAS == csAS)
    return;
  m_pWidgetDict->SetNameFor("AS", csAS);
}

void CPDF_FormControl::DrawControl(CFX_RenderDevice* pDevice,
                                   CFX_Matrix* pMatrix,
                                   CPDF_Page* pPage,
                                   CPDF_Annot::AppearanceMode mode,
                                   const CPDF_RenderOptions* pOptions) {
  if (m_pWidgetDict->GetIntegerFor("F") & ANNOTFLAG_HIDDEN)
    return;

  CPDF_Stream* pStream = FPDFDOC_GetAnnotAP(m_pWidgetDict, mode);
  if (!pStream)
    return;

  CFX_FloatRect form_bbox = pStream->GetDict()->GetRectFor("BBox");
  CFX_Matrix form_matrix = pStream->GetDict()->GetMatrixFor("Matrix");
  form_matrix.TransformRect(form_bbox);
  CFX_FloatRect arect = m_pWidgetDict->GetRectFor("Rect");
  CFX_Matrix matrix;
  matrix.MatchRect(arect, form_bbox);
  matrix.Concat(*pMatrix);
  CPDF_Form form(m_pField->m_pForm->m_pDocument,
                 m_pField->m_pForm->m_pFormDict->GetDictFor("DR"), pStream);
  form.ParseContent(nullptr, nullptr, nullptr);
  CPDF_RenderContext context(pPage);
  context.AppendLayer(&form, &matrix);
  context.Render(pDevice, pOptions, nullptr);
}

CPDF_FormControl::HighlightingMode CPDF_FormControl::GetHighlightingMode() {
  if (!m_pWidgetDict)
    return Invert;

  CFX_ByteString csH = m_pWidgetDict->GetStringFor("H", "I");
  for (size_t i = 0; i < FX_ArraySize(g_sHighlightingMode); ++i) {
    if (csH == g_sHighlightingMode[i])
      return static_cast<HighlightingMode>(i);
  }
  return Invert;
}

CPDF_ApSettings CPDF_FormControl::GetMK() const {
  return CPDF_ApSettings(m_pWidgetDict ? m_pWidgetDict->GetDictFor("MK")
                                       : nullptr);
}

bool CPDF_FormControl::HasMKEntry(const CFX_ByteString& csEntry) const {
  return GetMK().HasMKEntry(csEntry);
}

int CPDF_FormControl::GetRotation() {
  return GetMK().GetRotation();
}

FX_ARGB CPDF_FormControl::GetColor(int& iColorType,
                                   const CFX_ByteString& csEntry) {
  return GetMK().GetColor(iColorType, csEntry);
}

FX_FLOAT CPDF_FormControl::GetOriginalColor(int index,
                                            const CFX_ByteString& csEntry) {
  return GetMK().GetOriginalColor(index, csEntry);
}

void CPDF_FormControl::GetOriginalColor(int& iColorType,
                                        FX_FLOAT fc[4],
                                        const CFX_ByteString& csEntry) {
  GetMK().GetOriginalColor(iColorType, fc, csEntry);
}

CFX_WideString CPDF_FormControl::GetCaption(const CFX_ByteString& csEntry) {
  return GetMK().GetCaption(csEntry);
}

CPDF_Stream* CPDF_FormControl::GetIcon(const CFX_ByteString& csEntry) {
  return GetMK().GetIcon(csEntry);
}

CPDF_IconFit CPDF_FormControl::GetIconFit() {
  return GetMK().GetIconFit();
}

int CPDF_FormControl::GetTextPosition() {
  return GetMK().GetTextPosition();
}

CPDF_Action CPDF_FormControl::GetAction() {
  if (!m_pWidgetDict)
    return CPDF_Action();

  if (m_pWidgetDict->KeyExist("A"))
    return CPDF_Action(m_pWidgetDict->GetDictFor("A"));

  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pField->m_pDict, "A");
  if (!pObj)
    return CPDF_Action();

  return CPDF_Action(pObj->GetDict());
}

CPDF_AAction CPDF_FormControl::GetAdditionalAction() {
  if (!m_pWidgetDict)
    return CPDF_AAction();

  if (m_pWidgetDict->KeyExist("AA"))
    return CPDF_AAction(m_pWidgetDict->GetDictFor("AA"));
  return m_pField->GetAdditionalAction();
}

CPDF_DefaultAppearance CPDF_FormControl::GetDefaultAppearance() {
  if (!m_pWidgetDict)
    return CPDF_DefaultAppearance();

  if (m_pWidgetDict->KeyExist("DA"))
    return CPDF_DefaultAppearance(m_pWidgetDict->GetStringFor("DA"));

  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pField->m_pDict, "DA");
  if (pObj)
    return CPDF_DefaultAppearance(pObj->GetString());
  return m_pField->m_pForm->GetDefaultAppearance();
}

CPDF_Font* CPDF_FormControl::GetDefaultControlFont() {
  CPDF_DefaultAppearance cDA = GetDefaultAppearance();
  CFX_ByteString csFontNameTag;
  FX_FLOAT fFontSize;
  cDA.GetFont(csFontNameTag, fFontSize);
  if (csFontNameTag.IsEmpty())
    return nullptr;

  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pWidgetDict, "DR");
  if (CPDF_Dictionary* pDict = ToDictionary(pObj)) {
    CPDF_Dictionary* pFonts = pDict->GetDictFor("Font");
    if (pFonts) {
      CPDF_Dictionary* pElement = pFonts->GetDictFor(csFontNameTag);
      if (pElement) {
        CPDF_Font* pFont = m_pField->m_pForm->m_pDocument->LoadFont(pElement);
        if (pFont)
          return pFont;
      }
    }
  }
  if (CPDF_Font* pFormFont = m_pField->m_pForm->GetFormFont(csFontNameTag))
    return pFormFont;

  CPDF_Dictionary* pPageDict = m_pWidgetDict->GetDictFor("P");
  pObj = FPDF_GetFieldAttr(pPageDict, "Resources");
  if (CPDF_Dictionary* pDict = ToDictionary(pObj)) {
    CPDF_Dictionary* pFonts = pDict->GetDictFor("Font");
    if (pFonts) {
      CPDF_Dictionary* pElement = pFonts->GetDictFor(csFontNameTag);
      if (pElement) {
        CPDF_Font* pFont = m_pField->m_pForm->m_pDocument->LoadFont(pElement);
        if (pFont)
          return pFont;
      }
    }
  }
  return nullptr;
}

int CPDF_FormControl::GetControlAlignment() {
  if (!m_pWidgetDict)
    return 0;
  if (m_pWidgetDict->KeyExist("Q"))
    return m_pWidgetDict->GetIntegerFor("Q", 0);

  CPDF_Object* pObj = FPDF_GetFieldAttr(m_pField->m_pDict, "Q");
  if (pObj)
    return pObj->GetInteger();
  return m_pField->m_pForm->GetFormAlignment();
}