ad44dd500f
Tacking on parts[2] lets us keep things like IWYU comments
#include "something.h" // IWYU pragma: keep
Rerun the script too... not much interesting.
Change-Id: I9f02c81ffece0ecf3e99730d4a12d49e01417ddc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/213697
Commit-Queue: Mike Klein <mtklein@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
Auto-Submit: Mike Klein <mtklein@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
115 lines
3.6 KiB
C++
115 lines
3.6 KiB
C++
// Copyright 2019 Google LLC.
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// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
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#ifndef editor_DEFINED
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#define editor_DEFINED
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#include "experimental/editor/stringslice.h"
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#include "include/core/SkColor.h"
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#include "include/core/SkFont.h"
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#include "include/core/SkString.h"
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#include "include/core/SkTextBlob.h"
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#include <climits>
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#include <cstdint>
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#include <vector>
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class SkCanvas;
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class SkShaper;
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// TODO: modulize this; editor::Editor becomes SkEditor ?
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namespace editor {
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class Editor {
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public:
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void setText(const char* text, size_t len);
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int getHeight() const { return fHeight; }
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int getMargin() const { return fMargin; }
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void setWidth(int w); // may force re-shape
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const SkFont& font() const { return fFont; }
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void setFont(SkFont font);
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// query buffer:
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struct Str {
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const char* fPtr = nullptr;
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size_t fLen = 0;
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};
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size_t lineCount() const { return fLines.size(); }
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Str line(size_t index) const { return fLines[index].text(); }
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int lineHeight(size_t index) const { return fLines[index].fHeight; }
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struct TextPosition {
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size_t fTextByteIndex = SIZE_MAX; // index into UTF-8 representation of line.
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size_t fParagraphIndex = SIZE_MAX; // logical line, based on hard newline characters.
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};
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enum class Movement {
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kNowhere,
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kLeft,
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kUp,
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kRight,
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kDown,
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kHome,
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kEnd,
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};
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TextPosition move(Editor::Movement move, Editor::TextPosition pos);
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TextPosition getPosition(SkIPoint);
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TextPosition insert(TextPosition, const char* utf8Text, size_t byteLen);
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TextPosition remove(TextPosition, TextPosition);
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StringSlice copy(TextPosition, TextPosition);
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struct PaintOpts {
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SkColor4f fBackgroundColor = {1, 1, 1, 1};
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SkColor4f fForegroundColor = {0, 0, 0, 1};
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SkColor4f fSelectionColor = {0.729f, 0.827f, 0.988f, 1};
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SkColor4f fCursorColor = {1, 0, 0, 1};
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TextPosition fSelectionBegin;
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TextPosition fSelectionEnd;
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TextPosition fCursor;
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};
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void paint(SkCanvas* canvas, PaintOpts);
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private:
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struct TextLine {
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StringSlice fText;
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std::vector<SkRect> fCursorPos;
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SkIPoint fOrigin = {0, 0};
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int fHeight = 0;
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sk_sp<const SkTextBlob> fBlob;
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bool fSelected = false; // Will allow selection of subset of text later.
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// Also will track presence of cursor.
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TextLine(const char* str, size_t len) : fText(str, len) {}
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Str text() const { return Str{fText.begin(), fText.size()}; }
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};
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std::vector<TextLine> fLines;
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int fMargin = 10;
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int fWidth = 0;
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int fHeight = 0;
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SkFont fFont;
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SkRect fSpaceBounds = {0, 0, 0, 0};
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bool fNeedsReshape = false;
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static void Shape(TextLine*, SkShaper*, float width, const SkFont&, SkRect);
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void markAllDirty();
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void reshapeAll();
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};
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} // namespace editor
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static inline bool operator==(const editor::Editor::TextPosition& u,
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const editor::Editor::TextPosition& v) {
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return u.fParagraphIndex == v.fParagraphIndex && u.fTextByteIndex == v.fTextByteIndex;
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}
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static inline bool operator!=(const editor::Editor::TextPosition& u,
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const editor::Editor::TextPosition& v) { return !(u == v); }
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static inline bool operator<(const editor::Editor::TextPosition& u,
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const editor::Editor::TextPosition& v) {
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return u.fParagraphIndex < v.fParagraphIndex ||
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(u.fParagraphIndex == v.fParagraphIndex && u.fTextByteIndex < v.fTextByteIndex);
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}
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#endif // editor_DEFINED
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