CONSTRA Document Viewer & Annotation | Construction Document Viewer | Construction Annotation System | Construction ERP Suite
by Binary Bridge Technology Services https://bbtech.ae$ 1149.99
| Availability |
Odoo Online
Odoo.sh
On Premise
|
| Odoo Apps Dependencies |
•
Discuss (mail)
• Employees (hr) • Inventory (stock) • Invoicing (account) • Maintenance (maintenance) • Project (project) • Purchase (purchase) |
| Community Apps Dependencies | Show |
| Lines of code | 13585 |
| Technical Name |
constra_viewer |
| License | OPL-1 |
| Website | https://bbtech.ae |
| Versions | 18.0 19.0 |
CONSTRA
Document Viewer & Annotation Engine
A full-featured inline document viewer and annotation engine built on Fabric.js. Open any PDF or image attachment directly inside Odoo, mark it up with 11 professional drawing tools, add comments, and save versioned annotated copies — without ever modifying the original file.
Integrated Suite — Modules Depend on Each Other
CONSTRA is a single construction ERP suite for Odoo. Apps share projects, cost data,
documents, and site workflows. Several modules require other CONSTRA modules
to be installed (for example, constra_docs depends on
constra_base and constra_projects;
constra_viewer depends on constra_base and
constra_ops). Install the umbrella app
CONSTRA — Construction ERP Suite (constra_core)
to deploy the full suite with all dependencies resolved automatically.
CONSTRA module technical names:
constra_core— CONSTRA Construction ERP Suite (suite installer)constra_base— CONSTRA Base (technical foundation)constra_projects— Constra Projects Home (projects & dashboard)constra_finance— Construction Financeconstra_hse— Construction HSE & Safetyconstra_ops— Construction Operationsconstra_schedule— Construction Scheduling & P6 Integrationconstra_maint— Equipment & Maintenanceconstra_docs— Construction Document Registerconstra_viewer— CONSTRA Document Viewer & Annotationbb_doc_controller— BB Document Controller (Google Drive document management)bb_ipc_contracts— IPC / Subcontractor Contract Management
Key Features
Professional-grade annotation tools built directly into Odoo. No external software needed.
11 Drawing Tools
Select, Pan, Rectangle, Circle, Freehand Pencil, Text, Arrow, Dimension Line, Callout, Polygon, and Cloud markup tools for every annotation scenario.
Layer Management
Organize annotations on layers. Show, hide, lock, or reorder layers to keep complex markup organized and easy to review.
Comments & Threads
Pin comments directly on the drawing. Start threaded discussions tied to specific locations on the document for contextual collaboration.
Save-As Versioning
Every save creates a new versioned copy (AV1, AV2, AV3...). The original file is never modified. Access all versions from the Annotated Versions button.
PDF & Image Support
Open PDFs (multi-page via PDF.js) and image files (PNG, JPG, TIFF) directly in the viewer. Navigate pages and annotate any page independently.
Export PNG / SVG
Export annotated documents as high-resolution PNG or scalable SVG files for sharing, printing, or attaching to reports and transmittals.
How It Works
Three steps from document to annotated, versioned markup.
Open from Any Record
Click the annotation button on any supported record — Shop Drawings, RFIs, NCRs, Inspections, or Tasks. The viewer opens inline as an OWL client action.
Annotate & Comment
Use any of the 11 drawing tools to mark up the document. Add dimension lines, callouts, cloud markups, freehand sketches, text labels, and pinned comments.
Save Versioned Copy
Hit Save to create a versioned annotated copy (filename-AV1.png, filename-AV2.png). The original document is always protected and never overwritten.
Works With Your Existing Records
The annotation viewer integrates directly into 5 CONSTRA record types via inherited views.
11 Professional Annotation Tools
A complete markup toolkit designed for construction document review workflows.
Select
Click to select, move, resize, and rotate objects on the canvas
Pan
Click and drag to navigate around the document viewport
Rectangle
Draw rectangles to highlight areas or frame document sections
Circle
Draw ellipses and circles to mark specific points of interest
Pencil
Freehand drawing for sketches, redlines, and quick annotations
Text
Add text labels, notes, and descriptions anywhere on the document
Arrow
Draw directional arrows to point out specific details or issues
Dimension
Add dimension lines with measurement labels for technical review
Callout
Add callout boxes with leader lines pointing to specific areas
Polygon
Draw multi-point polygons for irregular area highlighting
Cloud
Industry-standard revision cloud markup for highlighting changes
Original Protected. Every Save Creates a New Version.
The annotation engine never modifies the original attachment. Each time you save, a new annotated version is created with an automatic version suffix. This gives you a complete history of all markups while keeping the source document intact.
- Original file is never modified or overwritten
- First save creates filename-AV1.png
- Subsequent saves create AV2, AV3, AV4... automatically
- All versions accessible from Annotated Versions button
- Full version history with timestamps and user tracking
See It in Action
The annotation viewer with toolbar, drawing canvas, and comment sidebar.
Technical Specifications
Built on cutting-edge client-side technology within the Odoo framework.
Canvas Engine
Fabric.js 5.3 — high-performance HTML5 canvas with object model and event system
Frontend Framework
OWL 3.x client action with dedicated components for viewer, toolbar, and sidebar
Data Transport
fetch() RPC calls for fast, asynchronous communication between client and server
PDF Rendering
PDF.js for multi-page PDF rendering with per-page annotation support
Platform
Odoo Community & Enterprise, Python 3.11+
Dependencies
constra_base, constra_ops, mail, web
Architecture
3 OWL components: ConstraViewer, AnnotationToolbar, AnnotationSidebar
Security
Role-based access control with project-level security rules
Binary Bridge Technology Services
We are a specialist Odoo partner focused on construction, contracting, and project-based industries. With 15+ years of ERP implementation experience, we build purpose-built solutions that construction companies actually use.
- bbtech.ae
- odoo@bbtech.ae
- +971 561296321
- +971 561286321
Support & Services
Complete Feature List
Every feature included in CONSTRA Document Viewer & Annotation Engine.
- 11 professional drawing and markup tools
- Fabric.js 5.3 canvas engine
- OWL 3.x client action architecture
- Multi-page PDF support via PDF.js
- PNG, JPG, and TIFF image support
- Export to PNG and SVG formats
- Save-As versioning (AV1, AV2, AV3...)
- Original file protection (never modified)
- Layer management and organization
- Pinned comments and threaded discussions
- Revision cloud markup tool
- Dimension line with measurement labels
- Shop Drawing annotation integration
- RFI annotation integration
- NCR annotation integration
- Inspection annotation integration
- Task annotation integration
- Odoo & Python 3.11 compatible
| Availability |
Odoo Online
Odoo.sh
On Premise
|
| Odoo Apps Dependencies |
•
Discuss (mail)
• Employees (hr) • Inventory (stock) • Invoicing (account) • Maintenance (maintenance) • Project (project) • Purchase (purchase) |
| Community Apps Dependencies | Show |
| Lines of code | 13585 |
| Technical Name |
constra_viewer |
| License | OPL-1 |
| Website | https://bbtech.ae |
Odoo Proprietary License v1.0 This software and associated files (the "Software") may only be used (executed, modified, executed after modifications) if you have purchased a valid license from the authors, typically via Odoo Apps, or if you have received a written agreement from the authors of the Software (see the COPYRIGHT file). You may develop Odoo modules that use the Software as a library (typically by depending on it, importing it and using its resources), but without copying any source code or material from the Software. You may distribute those modules under the license of your choice, provided that this license is compatible with the terms of the Odoo Proprietary License (For example: LGPL, MIT, or proprietary licenses similar to this one). It is forbidden to publish, distribute, sublicense, or sell copies of the Software or modified copies of the Software. The above copyright notice and this permission notice must be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
Please log in to comment on this module