feat: add image zoom, pan, and reset controls to document viewer
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b78c9da50e
commit
c25c4a4415
13 changed files with 316 additions and 4 deletions
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@ -541,3 +541,15 @@ msgstr ""
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#: common/views.py:644
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msgid "Erreur lors de la lecture du document"
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msgstr "Erreur lors de la lecture du document"
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#: common/templates/common/components/document_viewer.html
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msgid "Dézoomer"
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msgstr "Zoom out"
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#: common/templates/common/components/document_viewer.html
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msgid "Zoomer"
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msgstr "Zoom in"
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#: common/templates/common/components/document_viewer.html
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msgid "Réinitialiser"
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msgstr "Reset"
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@ -527,3 +527,15 @@ msgstr "Accès interdit"
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#: common/views.py:644
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msgid "Erreur lors de la lecture du document"
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msgstr "Erreur lors de la lecture du document"
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#: common/templates/common/components/document_viewer.html
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msgid "Dézoomer"
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msgstr "Dézoomer"
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#: common/templates/common/components/document_viewer.html
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msgid "Zoomer"
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msgstr "Zoomer"
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#: common/templates/common/components/document_viewer.html
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msgid "Réinitialiser"
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msgstr "Réinitialiser"
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@ -527,3 +527,15 @@ msgstr ""
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#: common/views.py:644
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msgid "Erreur lors de la lecture du document"
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msgstr ""
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#: common/templates/common/components/document_viewer.html
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msgid "Dézoomer"
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msgstr "Uitzoomen"
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#: common/templates/common/components/document_viewer.html
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msgid "Zoomer"
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msgstr "Inzoomen"
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#: common/templates/common/components/document_viewer.html
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msgid "Réinitialiser"
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msgstr "Herstellen"
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@ -221,10 +221,29 @@
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style="width: 100%; height: 70vh; border: none;"
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title="{{ doc.title }}"></iframe>
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{% elif doc.is_image %}
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<div class="doc-viewer-image-viewport position-relative w-100 d-flex justify-content-center align-items-center overflow-hidden"
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style="height: 70vh; min-height: 60vh; user-select: none;">
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<img src="{{ doc.file_url }}"
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class="d-block"
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class="doc-viewer-zoom-img"
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alt="{{ doc.title }}"
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style="max-height: 70vh; max-width: 100%; object-fit: contain;">
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draggable="false"
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style="max-height: 70vh; max-width: 100%; object-fit: contain; cursor: zoom-in; transition: transform 0.15s ease-out; transform-origin: center center;">
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{# Floating zoom controls toolbar #}
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<div class="doc-viewer-zoom-toolbar position-absolute bottom-0 start-50 translate-middle-x mb-2 d-flex align-items-center gap-1 px-2 py-1 rounded-pill shadow-sm"
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style="background: rgba(33, 37, 41, 0.78); backdrop-filter: blur(4px); z-index: 5;">
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<button type="button" class="btn btn-sm btn-link text-white p-1 text-decoration-none doc-zoom-out" title="{% translate 'Dézoomer' %}">
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<i class="bi bi-dash-circle fs-6"></i>
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</button>
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<span class="text-white-50 px-1 doc-zoom-level fw-semibold" style="font-size: 0.75rem; min-width: 44px; text-align: center;">100%</span>
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<button type="button" class="btn btn-sm btn-link text-white p-1 text-decoration-none doc-zoom-in" title="{% translate 'Zoomer' %}">
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<i class="bi bi-plus-circle fs-6"></i>
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</button>
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<button type="button" class="btn btn-sm btn-link text-white p-1 text-decoration-none doc-zoom-reset" title="{% translate 'Réinitialiser' %}">
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<i class="bi bi-arrow-counterclockwise fs-6"></i>
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</button>
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</div>
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</div>
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{% elif doc.text_preview %}
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<div class="w-100 p-3 overflow-auto" style="max-height: 70vh;">
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<pre class="bg-light border rounded p-3 mb-0" style="font-size:.85rem;white-space:pre-wrap;word-break:break-all;">{{ doc.text_preview }}</pre>
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@ -366,6 +385,19 @@
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</div>{# /modal #}
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{% endif %}
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<style>
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.doc-viewer-zoom-toolbar button:hover {
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color: #0dcaf0 !important;
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transform: scale(1.15);
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}
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.doc-viewer-zoom-toolbar button {
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transition: transform 0.1s ease, color 0.1s ease;
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}
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.doc-viewer-image-viewport {
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background-color: #f8f9fa;
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}
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</style>
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{# ═══════════════════════════ Inline JS ══════════════════════════════ #}
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<script>
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(function () {
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@ -434,6 +466,223 @@
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/* ── Initialise download button when modal becomes visible ── */
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modal.addEventListener('shown.bs.modal', updateDownloadBtn);
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/* ── Image Zoom & Pan functionality ── */
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function initImageZoom() {
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const viewports = carousel.querySelectorAll('.doc-viewer-image-viewport');
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viewports.forEach(function (vp) {
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const img = vp.querySelector('.doc-viewer-zoom-img');
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const zoomInBtn = vp.querySelector('.doc-zoom-in');
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const zoomOutBtn = vp.querySelector('.doc-zoom-out');
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const zoomResetBtn = vp.querySelector('.doc-zoom-reset');
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const zoomLevel = vp.querySelector('.doc-zoom-level');
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if (!img) return;
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let scale = 1;
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let posX = 0;
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let posY = 0;
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let isDragging = false;
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let startPointerX = 0;
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let startPointerY = 0;
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let initialPinchDist = 0;
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let initialScale = 1;
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function clampPan(targetX, targetY, curScale) {
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if (curScale <= 1) return { x: 0, y: 0 };
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const vpWidth = vp.clientWidth;
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const vpHeight = vp.clientHeight;
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const maxPanX = Math.max(0, (vpWidth * (curScale - 1)) / 2 + 50);
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const maxPanY = Math.max(0, (vpHeight * (curScale - 1)) / 2 + 50);
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return {
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x: Math.min(maxPanX, Math.max(-maxPanX, targetX)),
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y: Math.min(maxPanY, Math.max(-maxPanY, targetY))
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};
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}
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function applyTransform(animate) {
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img.style.transition = animate ? 'transform 0.15s ease-out' : 'none';
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img.style.transform = 'translate(' + posX + 'px, ' + posY + 'px) scale(' + scale + ')';
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if (zoomLevel) {
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zoomLevel.textContent = Math.round(scale * 100) + '%';
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if (scale > 1.05) {
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zoomLevel.classList.remove('text-white-50');
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zoomLevel.classList.add('text-white');
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} else {
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zoomLevel.classList.remove('text-white');
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zoomLevel.classList.add('text-white-50');
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}
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}
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if (scale > 1.05) {
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img.style.cursor = isDragging ? 'grabbing' : 'grab';
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} else {
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img.style.cursor = 'zoom-in';
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}
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}
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function setZoom(newScale, focalX, focalY, animate) {
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const prevScale = scale;
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scale = Math.min(5, Math.max(1, newScale));
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if (scale <= 1) {
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scale = 1;
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posX = 0;
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posY = 0;
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} else if (focalX !== undefined && focalY !== undefined && prevScale !== scale) {
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const vpRect = vp.getBoundingClientRect();
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const cx = focalX - (vpRect.left + vpRect.width / 2);
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const cy = focalY - (vpRect.top + vpRect.height / 2);
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const ratio = scale / prevScale;
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posX = posX - cx * (ratio - 1);
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posY = posY - cy * (ratio - 1);
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const clamped = clampPan(posX, posY, scale);
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posX = clamped.x;
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posY = clamped.y;
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} else {
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const clamped = clampPan(posX, posY, scale);
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posX = clamped.x;
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posY = clamped.y;
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}
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applyTransform(animate !== false);
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}
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function resetZoom() {
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scale = 1;
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posX = 0;
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posY = 0;
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applyTransform(true);
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}
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vp._resetZoom = resetZoom;
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if (zoomInBtn) {
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zoomInBtn.addEventListener('click', function (e) {
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e.stopPropagation();
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setZoom(scale * 1.35, undefined, undefined, true);
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});
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}
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if (zoomOutBtn) {
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zoomOutBtn.addEventListener('click', function (e) {
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e.stopPropagation();
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setZoom(scale / 1.35, undefined, undefined, true);
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});
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}
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if (zoomResetBtn) {
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zoomResetBtn.addEventListener('click', function (e) {
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e.stopPropagation();
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resetZoom();
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});
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}
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vp.addEventListener('wheel', function (e) {
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e.preventDefault();
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const factor = e.deltaY < 0 ? 1.15 : (1 / 1.15);
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setZoom(scale * factor, e.clientX, e.clientY, false);
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}, { passive: false });
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vp.addEventListener('dblclick', function (e) {
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if (e.target.closest('.doc-viewer-zoom-toolbar')) return;
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e.preventDefault();
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if (scale > 1.2) {
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resetZoom();
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} else {
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setZoom(2.5, e.clientX, e.clientY, true);
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}
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});
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vp.addEventListener('mousedown', function (e) {
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if (e.target.closest('.doc-viewer-zoom-toolbar')) return;
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if (scale <= 1) return;
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isDragging = true;
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startPointerX = e.clientX - posX;
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startPointerY = e.clientY - posY;
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img.style.cursor = 'grabbing';
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e.preventDefault();
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e.stopPropagation();
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});
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window.addEventListener('mousemove', function (e) {
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if (!isDragging) return;
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const clamped = clampPan(e.clientX - startPointerX, e.clientY - startPointerY, scale);
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posX = clamped.x;
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posY = clamped.y;
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applyTransform(false);
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});
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window.addEventListener('mouseup', function () {
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if (!isDragging) return;
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isDragging = false;
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if (scale > 1) img.style.cursor = 'grab';
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});
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function getTouchDistance(t1, t2) {
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const dx = t1.clientX - t2.clientX;
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const dy = t1.clientY - t2.clientY;
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return Math.sqrt(dx * dx + dy * dy);
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}
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vp.addEventListener('touchstart', function (e) {
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if (e.target.closest('.doc-viewer-zoom-toolbar')) return;
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if (e.touches.length === 2) {
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initialPinchDist = getTouchDistance(e.touches[0], e.touches[1]);
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initialScale = scale;
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e.preventDefault();
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e.stopPropagation();
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} else if (e.touches.length === 1 && scale > 1) {
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isDragging = true;
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startPointerX = e.touches[0].clientX - posX;
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startPointerY = e.touches[0].clientY - posY;
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e.stopPropagation();
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}
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}, { passive: false });
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vp.addEventListener('touchmove', function (e) {
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if (e.target.closest('.doc-viewer-zoom-toolbar')) return;
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if (e.touches.length === 2 && initialPinchDist > 0) {
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const currentDist = getTouchDistance(e.touches[0], e.touches[1]);
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const factor = currentDist / initialPinchDist;
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const midX = (e.touches[0].clientX + e.touches[1].clientX) / 2;
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const midY = (e.touches[0].clientY + e.touches[1].clientY) / 2;
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setZoom(initialScale * factor, midX, midY, false);
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e.preventDefault();
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e.stopPropagation();
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} else if (e.touches.length === 1 && isDragging && scale > 1) {
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const clamped = clampPan(e.touches[0].clientX - startPointerX, e.touches[0].clientY - startPointerY, scale);
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posX = clamped.x;
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posY = clamped.y;
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applyTransform(false);
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e.preventDefault();
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e.stopPropagation();
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}
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}, { passive: false });
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vp.addEventListener('touchend', function (e) {
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if (e.touches.length < 2) {
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initialPinchDist = 0;
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}
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if (e.touches.length === 0) {
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isDragging = false;
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}
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});
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});
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}
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function resetAllZooms() {
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carousel.querySelectorAll('.doc-viewer-image-viewport').forEach(function (vp) {
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if (typeof vp._resetZoom === 'function') {
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vp._resetZoom();
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}
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});
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}
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carousel.addEventListener('slide.bs.carousel', resetAllZooms);
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modal.addEventListener('hidden.bs.modal', resetAllZooms);
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initImageZoom();
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})();
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</script>
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@ -1137,3 +1137,12 @@ msgstr "No interventions to control"
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#: home/templates/home/widgets/controller_shortcuts.html:72
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msgid "Voir toutes les interventions à contrôler"
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msgstr "View all interventions to control"
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#: home/templates/home/widgets/stock_summary.html
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msgid "à traiter · en cours"
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msgstr "to process · in progress"
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#: home/templates/home/widgets/stock_summary.html
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msgid "Aucun bon à traiter ou en cours"
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msgstr "No orders to process or in progress"
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@ -1146,3 +1146,12 @@ msgstr "Aucune intervention à contrôler"
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#: home/templates/home/widgets/controller_shortcuts.html:72
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msgid "Voir toutes les interventions à contrôler"
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msgstr "Voir toutes les interventions à contrôler"
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#: home/templates/home/widgets/stock_summary.html
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msgid "à traiter · en cours"
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msgstr "à traiter · en cours"
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#: home/templates/home/widgets/stock_summary.html
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msgid "Aucun bon à traiter ou en cours"
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msgstr "Aucun bon à traiter ou en cours"
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@ -1143,3 +1143,12 @@ msgstr "Geen te controleren interventies"
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#: home/templates/home/widgets/controller_shortcuts.html:72
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msgid "Voir toutes les interventions à contrôler"
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msgstr "Alle te controleren interventies bekijken"
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#: home/templates/home/widgets/stock_summary.html
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msgid "à traiter · en cours"
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msgstr "te verwerken · in behandeling"
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#: home/templates/home/widgets/stock_summary.html
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msgid "Aucun bon à traiter ou en cours"
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msgstr "Geen bonnen te verwerken of in behandeling"
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