a47d20f8be
Administrative source import: native x86 compilation passed for 423 authored units. Source placement and submission states are migrated separately; this commit does not imply peer acceptance.
Previous head: 35d2a8cb36
Payload SHA256: 592f016d2730c5593bb653aa054c1e5f76a6df72c8f5a09e66f74876e2e33dee
67 lines
2.7 KiB
C++
67 lines
2.7 KiB
C++
#include "Client/Input/TextInputBuffer.h"
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#include "Render/Text/TextContext.h"
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#include "UI/Edit/EditTextState.h"
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#include "UI/Edit/EditViewport.h"
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#include <algorithm>
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#include <cstdint>
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#include <cstring>
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// OFFSET: 0x00862FB0
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// FUNCTION: fn_10905
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void EditViewport::Synchronize() {
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const int previousCursor = this->cursor;
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this->input.CopyDisplayText(this->text);
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this->input.Selection(this->anchor, this->cursor);
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this->state.Trim();
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const auto length = static_cast<std::uint32_t>(this->text.size());
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bool clamped = false;
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if (static_cast<std::uint32_t>(this->cursor) > length || static_cast<std::uint32_t>(this->anchor) > length) {
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this->anchor = static_cast<int>(std::min(static_cast<std::uint32_t>(this->anchor), length));
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this->cursor = static_cast<int>(std::min(static_cast<std::uint32_t>(this->cursor), length));
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this->input.Select(this->anchor, this->cursor);
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clamped = true;
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}
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if (this->cursor == 0) {
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this->firstVisible = 0;
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return;
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}
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const auto selection =
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static_cast<std::uint32_t>(std::max(this->input.cursor, this->input.anchor)) - static_cast<std::uint32_t>(std::min(this->input.cursor, this->input.anchor));
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if (selection >= length) {
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this->firstVisible = 0;
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}
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TextContext context(this->surface, this->fonts, this->locale);
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context.SetFont(0, 12, 0, 0);
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const auto measure = [&](const char* text, unsigned bytes) { return context.Measure(text, static_cast<int>(bytes ? bytes : std::strlen(text))).cx; };
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const int available = this->width - 7;
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if (this->cursor > previousCursor || clamped) {
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const int before = this->firstVisible == 0 ? 0 : measure(this->text.c_str(), static_cast<unsigned>(this->firstVisible));
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const int position = measure(this->text.c_str(), static_cast<unsigned>(this->cursor)) + 3 - before;
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if (position > available) {
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const char* end = this->text.c_str() + this->text.size();
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const char* next = CharNextExA(static_cast<WORD>(this->codePage), this->text.c_str(), 0);
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while (measure(next, 0) + 3 > available && next < end) {
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next = CharNextExA(static_cast<WORD>(this->codePage), next, 0);
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}
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const auto tail = static_cast<std::uint32_t>(std::strlen(next));
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const int candidate = this->firstVisible + this->cursor - previousCursor;
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this->firstVisible = static_cast<int>(std::min(static_cast<std::uint32_t>(this->cursor) - tail, static_cast<std::uint32_t>(candidate)));
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}
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} else if (this->cursor < previousCursor) {
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if (measure(this->text.c_str(), static_cast<unsigned>(this->cursor)) + 3 < available && this->firstVisible > this->cursor) {
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this->firstVisible += this->cursor - previousCursor;
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}
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this->firstVisible = std::max(this->firstVisible, 0);
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}
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}
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